message: make sure we still have the room
diff: @@ -100,7 +100,7 @@ export default class DMRoomMap {
  if (selfRoomIds) {
  const guessedUserIds = selfRoomIds.map((roomId) => {
  const room = this.matrixClient.getRoom(roomId);
  - return room.guessDMUserId();
  + return room && room.guessDMUserId();
  });
  delete userToRooms[myUserId];
  guessedUserIds.forEach((userId, i) => {
  