back out 349069 to see if it caused xserve02 orange

content/xul/document/src/nsXULDocument.cpp

@@ -215,6 +215,13 @@ nsXULDocument::~nsXULDocument()
     NS_ASSERTION(mNextSrcLoadWaiter == nsnull,
         "unreferenced document still waiting for script source to load?");
 
+    // Notify our observers here, we can't let the nsINode
+    // destructor do that for us since some of the observers are
+    // deleted by the time we get there.
+    nsNodeUtils::NodeWillBeDestroyed(this);
+    // Clear mObservers to keep it in sync with the mutationobserver list
+    mObservers.Clear();
+
     // In case we failed somewhere early on and the forward observer
     // decls never got resolved.
     DestroyForwardReferences();