Check user is in a room before flushing their overdose key

houdini/handlers/games/__init__.py

@@ -47,7 +47,7 @@ async def handle_overdose_key(p, room: Room):
 @handlers.disconnected
 @handlers.player_attribute(joined_world=True)
 async def disconnect_overdose_key(p):
-    if p.room.game:
+    if p.room is not None and p.room.game:
         overdose_key = f'{p.id}.overdose'
         await p.server.redis.delete(overdose_key)