Bug 537046 - crash in [@ nsWSRunObject::GetWSBoundingParent() ]; r=peterv

--HG--
extra : rebase_source : 69b6a49317b33794a904f7b1e8e63a5dea43792b

editor/libeditor/html/nsWSRunObject.cpp

@@ -694,6 +694,8 @@ nsWSRunObject::AdjustWhitespace()
 already_AddRefed<nsIDOMNode>
 nsWSRunObject::GetWSBoundingParent()
 {
+  if (!mNode)
+    return nsnull;
   nsCOMPtr<nsIDOMNode> wsBoundingParent = mNode;
   while (!IsBlockNode(wsBoundingParent))
   {