oops, fix it properly

src/wormhole/transit.py

@@ -244,7 +244,7 @@ class Connection(protocol.Protocol, policies.TimeoutMixin):
         if self.state == "records":
             return self.dataReceivedRECORDS()
         if self.state == "hung up":
-            pass
+            return
         if isinstance(self.state, Exception): # for tests
             raise self.state
         raise ValueError("internal error: unknown state %s" % (self.state,))