tdf#138762: crash when trying to open sidebar w chart in Writer

In Writer when in chart edit mode, and the chart is deselected,
the object selection remains. Opening Properties sidebar at
this point crashed. Calc and Impress were unaffected.

Regression from b5fdb148fe87a90f3e586efcea7aa6ef865fa42a

Change-Id: I356c3a42c41dd38e4739df27c72c6d67722b1dbc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/107500
Tested-by: Jenkins
Reviewed-by: Aron Budea <aron.budea@collabora.com>
(cherry picked from commit 7e5991dc695d1e590483615c2907811ce4117834)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/107543
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/sfx2/source/sidebar/SidebarController.cxx b/sfx2/source/sidebar/SidebarController.cxx
index 08606a83f9dc..68066f4f4918 100644
--- a/sfx2/source/sidebar/SidebarController.cxx
+++ b/sfx2/source/sidebar/SidebarController.cxx
@@ -611,10 +611,13 @@ void SidebarController::OpenThenToggleDeck (
     SwitchToDeck(rsDeckId);
 
     // Make sure the sidebar is wide enough to fit the requested content
-    sal_Int32 nRequestedWidth = (mpCurrentDeck->GetMinimalWidth() + TabBar::GetDefaultWidth())
-                                * mpTabBar->GetDPIScaleFactor();
-    if (mnSavedSidebarWidth < nRequestedWidth)
-        SetChildWindowWidth(nRequestedWidth);
+    if (mpCurrentDeck && mpTabBar)
+    {
+        sal_Int32 nRequestedWidth = (mpCurrentDeck->GetMinimalWidth() + TabBar::GetDefaultWidth())
+                                    * mpTabBar->GetDPIScaleFactor();
+        if (mnSavedSidebarWidth < nRequestedWidth)
+            SetChildWindowWidth(nRequestedWidth);
+    }
 
     collectUIInformation(rsDeckId);
 }