coverity#1302618 deref of NULL

on examination this PreparePaint virtual is only called from
SvTreeListBox::PaintEntry1

and PaintEntry1 is only called from SvImpLBox::Paint in a

    for(sal_uInt16 n=0; n< nCount && pEntry; n++)
    {
        /*long nMaxRight=*/
        pView->PaintEntry1

loop so pEntry always exists given that test. Re-jig things
so these families of method take a reference instead of a pointer
so verifying it cannot be NULL and a whole pile of else paths
fall away

Change-Id: Ied40acb1c2263c21b4447832f8cb86f64ed9e80d

8 files changed, 25 insertions, 28 deletions

diff --git a/cui/source/customize/acccfg.cxx b/cui/source/customize/acccfg.cxx
index b3511e977198..b91f0039f62a 100644
--- a/cui/source/customize/acccfg.cxx
+++ b/cui/source/customize/acccfg.cxx
@@ -625,7 +625,7 @@ public:
     virtual ~SfxAccCfgLBoxString_Impl();
 
     virtual void Paint(const Point& aPos, SvTreeListBox& rDevice, vcl::RenderContext& rRenderContext,
-                       const SvViewDataEntry* pView, const SvTreeListEntry* pEntry) SAL_OVERRIDE;
+                       const SvViewDataEntry* pView, const SvTreeListEntry& rEntry) SAL_OVERRIDE;
 };
 
 
@@ -637,12 +637,9 @@ SfxAccCfgLBoxString_Impl::~SfxAccCfgLBoxString_Impl()
 {}
 
 void SfxAccCfgLBoxString_Impl::Paint(const Point& aPos, SvTreeListBox& /*rDevice*/, vcl::RenderContext& rRenderContext,
-                                     const SvViewDataEntry* /*pView*/, const SvTreeListEntry* pEntry)
+                                     const SvViewDataEntry* /*pView*/, const SvTreeListEntry& rEntry)
 {
-    if (!pEntry)
-        return;
-
-    TAccInfo* pUserData = static_cast<TAccInfo*>(pEntry->GetUserData());
+    TAccInfo* pUserData = static_cast<TAccInfo*>(rEntry.GetUserData());
     if (!pUserData)
         return;
 
diff --git a/cui/source/customize/cfg.cxx b/cui/source/customize/cfg.cxx
index d472b7f73989..c013d6a98080 100644
--- a/cui/source/customize/cfg.cxx
+++ b/cui/source/customize/cfg.cxx
@@ -1328,9 +1328,9 @@ public:
     virtual ~PopupPainter() { }
 
     virtual void Paint(const Point& rPos, SvTreeListBox& rOutDev, vcl::RenderContext& rRenderContext,
-                       const SvViewDataEntry* pView, const SvTreeListEntry* pEntry) SAL_OVERRIDE
+                       const SvViewDataEntry* pView, const SvTreeListEntry& rEntry) SAL_OVERRIDE
     {
-        SvLBoxString::Paint(rPos, rOutDev, rRenderContext, pView, pEntry);
+        SvLBoxString::Paint(rPos, rOutDev, rRenderContext, pView, rEntry);
 
         rRenderContext.Push(PushFlags::FILLCOLOR);
 
@@ -1343,7 +1343,7 @@ public:
             nX -= pVScroll->GetSizePixel().Width();
         }
 
-        const SvViewDataItem* pItem = rOutDev.GetViewDataItem( pEntry, this );
+        const SvViewDataItem* pItem = rOutDev.GetViewDataItem( &rEntry, this );
         nX -= pItem->maSize.Height();
 
         long nSize = pItem->maSize.Height() / 2;
diff --git a/cui/source/customize/macropg.cxx b/cui/source/customize/macropg.cxx
index 8697cf9ce182..a57fb4b7ed9c 100644
--- a/cui/source/customize/macropg.cxx
+++ b/cui/source/customize/macropg.cxx
@@ -452,7 +452,7 @@ public:
     IconLBoxString( SvTreeListEntry* pEntry, sal_uInt16 nFlags, const OUString& sText,
         Image* pMacroImg, Image* pComponentImg );
     virtual void Paint(const Point& rPos, SvTreeListBox& rOutDev, vcl::RenderContext& rRenderContext,
-                       const SvViewDataEntry* pView, const SvTreeListEntry* pEntry) SAL_OVERRIDE;
+                       const SvViewDataEntry* pView, const SvTreeListEntry& rEntry) SAL_OVERRIDE;
 };
 
 
@@ -467,7 +467,7 @@ IconLBoxString::IconLBoxString( SvTreeListEntry* pEntry, sal_uInt16 nFlags, cons
 
 
 void IconLBoxString::Paint(const Point& aPos, SvTreeListBox& /*aDevice*/, vcl::RenderContext& rRenderContext,
-                           const SvViewDataEntry* /*pView*/, const SvTreeListEntry* /*pEntry*/)
+                           const SvViewDataEntry* /*pView*/, const SvTreeListEntry& /*rEntry*/)
 {
     OUString aTxt(GetText());
     if (!aTxt.isEmpty())
diff --git a/cui/source/dialogs/thesdlg.cxx b/cui/source/dialogs/thesdlg.cxx
index d6a375922d51..c346935c2c79 100644
--- a/cui/source/dialogs/thesdlg.cxx
+++ b/cui/source/dialogs/thesdlg.cxx
@@ -147,9 +147,9 @@ AlternativesString::AlternativesString(
 }
 
 void AlternativesString::Paint(const Point& rPos, SvTreeListBox& /*rDev*/, vcl::RenderContext& rRenderContext,
-                               const SvViewDataEntry* /*pView*/, const SvTreeListEntry* pEntry)
+                               const SvViewDataEntry* /*pView*/, const SvTreeListEntry& rEntry)
 {
-    AlternativesExtraData* pData = m_rControlImpl.GetExtraData(pEntry);
+    AlternativesExtraData* pData = m_rControlImpl.GetExtraData(&rEntry);
     Point aPos(rPos);
     rRenderContext.Push(PushFlags::FONT);
     if (pData && pData->IsHeader())
diff --git a/cui/source/dialogs/thesdlg_impl.hxx b/cui/source/dialogs/thesdlg_impl.hxx
index 25b09f51d754..f302947b9fb3 100644
--- a/cui/source/dialogs/thesdlg_impl.hxx
+++ b/cui/source/dialogs/thesdlg_impl.hxx
@@ -54,7 +54,7 @@ public:
         SvTreeListEntry* pEntry, sal_uInt16 nFlags, const OUString& rStr );
 
     virtual void Paint(const Point& rPos, SvTreeListBox& rOutDev, vcl::RenderContext& rRenderContext,
-                       const SvViewDataEntry* pView, const SvTreeListEntry* pEntry) SAL_OVERRIDE;
+                       const SvViewDataEntry* pView, const SvTreeListEntry& rEntry) SAL_OVERRIDE;
 };
 
 #endif
diff --git a/cui/source/options/optHeaderTabListbox.cxx b/cui/source/options/optHeaderTabListbox.cxx
index 404ef64bc7e2..bba08c097ef6 100644
--- a/cui/source/options/optHeaderTabListbox.cxx
+++ b/cui/source/options/optHeaderTabListbox.cxx
@@ -35,18 +35,18 @@ public:
         SvLBoxString( pEntry, nFlags, rTxt ) {}
 
     virtual void Paint(const Point& rPos, SvTreeListBox& rDev, vcl::RenderContext& rRenderContext,
-                       const SvViewDataEntry* pView, const SvTreeListEntry* pEntry) SAL_OVERRIDE;
+                       const SvViewDataEntry* pView, const SvTreeListEntry& rEntry) SAL_OVERRIDE;
 };
 
 
 
 void OptLBoxString_Impl::Paint(const Point& rPos, SvTreeListBox& /*rDev*/, vcl::RenderContext& rRenderContext,
-                               const SvViewDataEntry* /*pView*/, const SvTreeListEntry* pEntry)
+                               const SvViewDataEntry* /*pView*/, const SvTreeListEntry& rEntry)
 {
     rRenderContext.Push(PushFlags::FONT);
     vcl::Font aFont(rRenderContext.GetFont());
     //detect readonly state by asking for a valid Image
-    if (pEntry && !(!SvTreeListBox::GetCollapsedEntryBmp(pEntry)))
+    if (!(!SvTreeListBox::GetCollapsedEntryBmp(&rEntry)))
         aFont.SetColor(Application::GetSettings().GetStyleSettings().GetDeactiveTextColor());
     rRenderContext.SetFont(aFont);
     rRenderContext.DrawText(rPos, GetText());
diff --git a/cui/source/options/optlingu.cxx b/cui/source/options/optlingu.cxx
index 4b285f554500..7f42d50323b3 100644
--- a/cui/source/options/optlingu.cxx
+++ b/cui/source/options/optlingu.cxx
@@ -264,13 +264,13 @@ public:
         const OUString& rStr ) : SvLBoxString( pEntry, nFlags, rStr ) {}
 
     virtual void Paint(const Point& rPos, SvTreeListBox& rOutDev, vcl::RenderContext& rRenderContext,
-                       const SvViewDataEntry* pView, const SvTreeListEntry* pEntry) SAL_OVERRIDE;
+                       const SvViewDataEntry* pView, const SvTreeListEntry& rEntry) SAL_OVERRIDE;
 };
 
 void BrwStringDic_Impl::Paint(const Point& rPos, SvTreeListBox& /*rDev*/, vcl::RenderContext& rRenderContext,
-                              const SvViewDataEntry* /*pView*/, const SvTreeListEntry* pEntry)
+                              const SvViewDataEntry* /*pView*/, const SvTreeListEntry& rEntry)
 {
-    ModuleUserData_Impl* pData = static_cast<ModuleUserData_Impl*>(pEntry->GetUserData());
+    ModuleUserData_Impl* pData = static_cast<ModuleUserData_Impl*>(rEntry.GetUserData());
     Point aPos(rPos);
     rRenderContext.Push(PushFlags::FONT);
     if (pData->IsParent())
@@ -441,16 +441,16 @@ public:
         const OUString& rStr ) : SvLBoxString( pEntry, nFlags, rStr ) {}
 
     virtual void Paint(const Point& rPos, SvTreeListBox& rOutDev, vcl::RenderContext& rRenderContext,
-                       const SvViewDataEntry* pView, const SvTreeListEntry* pEntry) SAL_OVERRIDE;
+                       const SvViewDataEntry* pView, const SvTreeListEntry& rEntry) SAL_OVERRIDE;
 };
 
 void BrwString_Impl::Paint(const Point& rPos, SvTreeListBox& /*rDev*/, vcl::RenderContext& rRenderContext,
-                           const SvViewDataEntry* /*pView*/, const SvTreeListEntry* pEntry)
+                           const SvViewDataEntry* /*pView*/, const SvTreeListEntry& rEntry)
 {
     Point aPos(rPos);
     aPos.X() += 20;
     rRenderContext.DrawText(aPos, GetText());
-    if (pEntry->GetUserData())
+    if (rEntry.GetUserData())
     {
         Point aNewPos(aPos);
         aNewPos.X() += rRenderContext.GetTextWidth(GetText());
@@ -459,7 +459,7 @@ void BrwString_Impl::Paint(const Point& rPos, SvTreeListBox& /*rDev*/, vcl::Rend
         aFont.SetWeight(WEIGHT_BOLD);
 
         //??? convert the lower byte from the user date into a string
-        OptionsUserData aData(reinterpret_cast<sal_uLong>(pEntry->GetUserData()));
+        OptionsUserData aData(reinterpret_cast<sal_uLong>(rEntry.GetUserData()));
         if (aData.HasNumericValue())
         {
             OUStringBuffer sTxt;
diff --git a/cui/source/tabpages/autocdlg.cxx b/cui/source/tabpages/autocdlg.cxx
index b1fded465be2..ecd32b8522fa 100644
--- a/cui/source/tabpages/autocdlg.cxx
+++ b/cui/source/tabpages/autocdlg.cxx
@@ -335,16 +335,16 @@ public:
         const OUString& rStr ) : SvLBoxString(pEntry,nFlags,rStr){}
 
     virtual void Paint(const Point& rPos, SvTreeListBox& rDev, vcl::RenderContext& rRenderContext,
-                       const SvViewDataEntry* pView, const SvTreeListEntry* pEntry) SAL_OVERRIDE;
+                       const SvViewDataEntry* pView, const SvTreeListEntry& rEntry) SAL_OVERRIDE;
 };
 
 void OfaImpBrwString::Paint(const Point& rPos, SvTreeListBox& /*rDev*/, vcl::RenderContext& rRenderContext,
-                            const SvViewDataEntry* /*pView*/, const SvTreeListEntry* pEntry)
+                            const SvViewDataEntry* /*pView*/, const SvTreeListEntry& rEntry)
 {
     rRenderContext.DrawText(rPos, GetText());
-    if (pEntry->GetUserData())
+    if (rEntry.GetUserData())
     {
-        ImpUserData* pUserData = static_cast<ImpUserData*>(pEntry->GetUserData());
+        ImpUserData* pUserData = static_cast<ImpUserData*>(rEntry.GetUserData());
         Point aNewPos(rPos);
         aNewPos.X() += rRenderContext.GetTextWidth(GetText());
         vcl::Font aOldFont(rRenderContext.GetFont());