NetworkCore: return the server in get_server if the arg was a server

classes.py

@@ -472,6 +472,9 @@ class PyLinkNetworkCore(utils.DeprecatedAttributesObject, utils.CamelCaseToSnake
 
     def get_server(self, numeric):
         """Finds the SID of the server a user is on."""
+        if numeric in self.servers:  # We got a server already (lazy hack)
+            return numeric
+
         userobj = self.users.get(numeric)
         if userobj:
             return userobj.server