Merge pull request #267 from lbryio/fix-dht-ports

Restore reactor.iterate in dht shutdown

lbrynet/dht/protocol.py

@@ -321,3 +321,7 @@ class KademliaProtocol(protocol.DatagramProtocol):
             except Exception, e:
                 log.exception('Failed to cancel %s', self._callLaterList[key])
             del self._callLaterList[key]
+            # not sure why this is needed, but taking this out sometimes causes
+            # exceptions.AttributeError: 'Port' object has no attribute 'socket'
+            # to happen on shutdown
+            reactor.iterate()