sd: AccessibleSlideSorterView: don't register twice at ViewShell

Triggers assert in SfxListener::StartListening()

Change-Id: I17f165d600fa789d7ce8d7b2296988064c5d5844

1 files changed, 4 insertions, 1 deletions

diff --git a/sd/source/ui/accessibility/AccessibleSlideSorterView.cxx b/sd/source/ui/accessibility/AccessibleSlideSorterView.cxx
index b530e3ee8471..8268c5506643 100644
--- a/sd/source/ui/accessibility/AccessibleSlideSorterView.cxx
+++ b/sd/source/ui/accessibility/AccessibleSlideSorterView.cxx
@@ -796,8 +796,11 @@ void AccessibleSlideSorterView::Implementation::ReleaseListeners()
 
     if (mbListeningToDocument)
     {
-        if (mrSlideSorter.GetViewShell() != nullptr)
+        if (mrSlideSorter.GetViewShell() != nullptr && !IsListening(*mrSlideSorter.GetViewShell()))
+        {   // ??? is it even possible that ConnectListeners is called with no
+            // view shell and this one with a view shell?
             StartListening(*mrSlideSorter.GetViewShell());
+        }
         EndListening (*mrSlideSorter.GetModel().GetDocument());
         mbListeningToDocument = false;
     }