message: fix var decl
diff: @@ -102,7 +102,7 @@ export default class DMRoomMap {
  userId = "";
  }
  const roomId = selfRoomIds[i];
  - const roomIds = userToRooms[userId];
  + let roomIds = userToRooms[userId];
  if (!roomIds) {
  roomIds = userToRooms[userId] = [];
  }
  