tdf#96888 Kill internal vcl dog-tags ...

Did some changes to lstbox.cxx file. Patch No. 14

Change-Id: I8e559c55345fa8c72f49c94f1a94906bf03683c7
Reviewed-on: https://gerrit.libreoffice.org/21231Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
Tested-by: Michael Meeks <michael.meeks@collabora.com>

vcl/source/control/lstbox.cxx

@@ -323,12 +323,10 @@ IMPL_LINK_NOARG_TYPED(ListBox, ImplPopupModeEndHdl, FloatingWindow*, void)
             bool bTravelSelect = mpImplLB->IsTravelSelect();
             mpImplLB->SetTravelSelect( true );
 
-            ImplDelData aCheckDelete;
-            ImplAddDel( &aCheckDelete );
+            VclPtr<vcl::Window> xWindow = this;
             Select();
-            if ( aCheckDelete.IsDead() )
+            if ( xWindow->IsDisposed() )
                 return;
-            ImplRemoveDel( &aCheckDelete );
 
             mpImplLB->SetTravelSelect( bTravelSelect );
         }