message: Ignore to-device decryption in the room list store
  This avoids meaningless warnings about "unknown" rooms.
diff: @@ -302,6 +302,9 @@ export class RoomListStoreClass extends AsyncStoreWithClient<IState> {
  } else if (payload.action === 'MatrixActions.Event.decrypted') {
  const eventPayload = (<any>payload); // TODO: Type out the dispatcher types
  const roomId = eventPayload.event.getRoomId();
  + if (!roomId) {
  + return;
  + }
  const room = this.matrixClient.getRoom(roomId);
  if (!room) {
  console.warn(`Event ${eventPayload.event.getId()} was decrypted in an unknown room ${roomId}`);
  