Fix a crash on commands to unauthorized transport

xmpp/handlers.go

@@ -93,8 +93,8 @@ func HandleMessage(s xmpp.Sender, p stanza.Packet) {
 				gateway.SendPresence(component, msg.From, gateway.SPType("subscribed"))
 			} else {
 				log.Error("Message from stranger")
-				return
 			}
+			return
 		}
 
 		toID, ok := toToID(msg.To)