Stop sending an error and simply ignore relay from an unauthenticated player because that should only happen on immediate logout for which there's nothing to do

src/Messaging.hs

@@ -57,10 +57,9 @@ broadcast obj = do
 relay :: FromClient -> (Message.T -> App.T ()) -> App.T ()
 relay message f = do
   App.debug "Relaying"
-  maybe bounce doRelay . Session.player =<< App.session
+  maybe (return ()) doRelay . Session.player =<< App.session
   where
     doRelay player = f $ Relay {from = playerID player, message}
-    bounce = send (Error "Unidentified client can't relay messages")
 
 receive :: App.T FromClient
 receive = do