Do not move nCurUndoAction < 0.

(Could easily happen when max undo steps is set to 1.)

1 files changed, 4 insertions, 1 deletions

diff --git a/svl/source/undo/undo.cxx b/svl/source/undo/undo.cxx
index b3bd44099631..449b79a89e9d 100644
--- a/svl/source/undo/undo.cxx
+++ b/svl/source/undo/undo.cxx
@@ -654,7 +654,10 @@ bool SfxUndoManager::ImplAddUndoAction_NoNotify( SfxUndoAction *pAction, bool bT
         {
             i_guard.markForDeletion( m_pData->pActUndoArray->aUndoActions[0].pAction );
             m_pData->pActUndoArray->aUndoActions.Remove(0);
-            --m_pData->pActUndoArray->nCurUndoAction;
+            if (m_pData->pActUndoArray->nCurUndoAction > 0)
+            {
+                --m_pData->pActUndoArray->nCurUndoAction;
+            }
         }
     }