Make Dispatcher.pending more robust.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2027 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/dispatcher.py

@@ -87,5 +87,5 @@ class Dispatcher:
     @giant_lock
     @profiler_decorator
     def pending(self, queue):
-        return not queue.empty() or self.queue_dict[id(queue)] > 0
+        return not queue.empty() or self.queue_dict.get(id(queue), 0) > 0