tdf#126000 Crash deleting template

regression from
    commit 72c191e046112df73c66be8dc8d1bec5a546fa60
    Date:   Wed Sep 19 12:11:38 2018 +0200
    loplugin:useuniqueptr in ThumbnailView

Change-Id: I9bdcec5c2f14b1bd33998041d4b2d8cd2f7be052
Reviewed-on: https://gerrit.libreoffice.org/74362
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
(cherry picked from commit 801bb2d4002cf2034315875440a6aee358951eb9)
Reviewed-on: https://gerrit.libreoffice.org/74372
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/sfx2/source/control/thumbnailview.cxx b/sfx2/source/control/thumbnailview.cxx
index 2343aeee11f7..76817867ef3a 100644
--- a/sfx2/source/control/thumbnailview.cxx
+++ b/sfx2/source/control/thumbnailview.cxx
@@ -2142,12 +2142,16 @@ void SfxThumbnailView::RemoveItem( sal_uInt16 nItemId )
 
     if ( nPos < mFilteredItemList.size() ) {
 
+        // keep it alive until after we have deleted it from the filter item list
+        std::unique_ptr<ThumbnailViewItem> xKeepAliveViewItem;
+
         // delete item from the thumbnail list
-        for (size_t i = 0, n = mItemList.size(); i < n; ++i)
+        for (auto it = mItemList.begin(); it != mItemList.end(); ++it)
         {
-            if (mItemList[i]->mnId == nItemId)
+            if ((*it)->mnId == nItemId)
             {
-                mItemList.erase(mItemList.begin()+i);
+                xKeepAliveViewItem = std::move(*it);
+                mItemList.erase(it);
                 break;
             }
         }
@@ -2162,7 +2166,6 @@ void SfxThumbnailView::RemoveItem( sal_uInt16 nItemId )
             maItemStateHdl.Call(*it);
         }
 
-        delete *it;
         mFilteredItemList.erase( it );
         mpStartSelRange = mFilteredItemList.end();
     }