From 90b42251633db498505bc8906aefe5d08edbb5c6 Mon Sep 17 00:00:00 2001
From: Michael Stahl <mstahl@redhat.com>
Date: Mon, 28 Aug 2017 17:09:06 +0200
Subject: svx: fix assert in SdrEdgeObj::ConnectToNode()

When loading ooo68143-1.sxw we get an assert:

Assertion `!(bListeningAlready && !bPreventDuplicates) && "duplicate
listener, try building with DBG_UTIL to find the other insert site."'

The connector is connected to the same SdrObject on both ends:

<draw:connector ...
 draw:start-shape="id13" draw:start-glue-point="2"
 draw:end-shape="id13" draw:end-glue-point="2">

Change-Id: Ia0dd140b7c2ca948ace3fbf93d8c4abd4331399d
---
 svx/source/svdraw/svdobj.cxx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/svx/source/svdraw/svdobj.cxx b/svx/source/svdraw/svdobj.cxx
index 947f70a29f4e..e1257be84517 100644
--- a/svx/source/svdraw/svdobj.cxx
+++ b/svx/source/svdraw/svdobj.cxx
@@ -585,7 +585,11 @@ void SdrObject::AddListener(SfxListener& rListener)
 {
     ImpForcePlusData();
     if (pPlusData->pBroadcast==nullptr) pPlusData->pBroadcast=new SfxBroadcaster;
-    rListener.StartListening(*pPlusData->pBroadcast);
+
+    // SdrEdgeObj may be connected to same SdrObject on both ends so allow it
+    // to listen twice
+    SdrEdgeObj const*const pEdge(dynamic_cast<SdrEdgeObj const*>(&rListener));
+    rListener.StartListening(*pPlusData->pBroadcast, pEdge != nullptr);
 }
 
 void SdrObject::RemoveListener(SfxListener& rListener)
-- 
cgit