Handle a connection close in waitAnyMessage.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1805 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/client/app.py

@@ -195,6 +195,9 @@ class Application(object):
                 conn, packet = get(block)
             except Empty:
                 break
+            if packet is None:
+                # connection was closed
+                continue
             block = False
             try:
                 _handlePacket(conn, packet)