Typo

synapse/handlers/presence.py

@@ -290,7 +290,7 @@ def get_states(self, target_users, auth_user, as_event=False, check_auth=True):
             )
 
             for local_part, state in states.items():
-                if stat is None:
+                if state is None:
                     continue
                 res = {"presence": state["state"]}
                 if "status_msg" in state and state["status_msg"]: