forgot import

git-svn-id: https://svn.erp5.org/repos/neo/branches/prototype3@473 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/connection.py

@@ -24,6 +24,7 @@ from neo.protocol import Packet, ProtocolError
 from neo.event import IdleEvent
 from neo.connector import ConnectorTryAgainException, ConnectorInProgressException
 from neo.util import dump
+from neo.exception import OperationFailure
 
 def lockCheckWrapper(func):
     """