Fix r2240.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2244 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/admin/app.py

@@ -50,7 +50,7 @@ class Dispatcher:
         """
             Unregister packet expected for a given connection
         """
-        del self.message_table
+        self.message_table.clear()
 
 class Application(object):
     """The storage node application."""