check if Edit was disposed while insert special character was still open

seen when testing renaming tabs in basic IDE

Change-Id: Id0a5d7ae54f789f04701ac7dd9c18608704238d8
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/101768
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/vcl/source/control/edit.cxx b/vcl/source/control/edit.cxx
index f90a7f0bd8ed..b14789aaf133 100644
--- a/vcl/source/control/edit.cxx
+++ b/vcl/source/control/edit.cxx
@@ -2022,11 +2022,14 @@ void Edit::Command( const CommandEvent& rCEvt )
         else if (sCommand == "specialchar" && pImplFncGetSpecialChars)
         {
             OUString aChars = pImplFncGetSpecialChars(GetFrameWeld(), GetFont());
-            SetSelection( aSaveSel );
-            if (!aChars.isEmpty())
+            if (!IsDisposed()) // destroyed while the insert special character dialog was still open
             {
-                ImplInsertText( aChars );
-                Modify();
+                SetSelection( aSaveSel );
+                if (!aChars.isEmpty())
+                {
+                    ImplInsertText( aChars );
+                    Modify();
+                }
             }
         }
         pPopup.clear();