message: Always return a client from onRegistered
  Fixes
  The return value of onRegistered eventually ends up in the pusher setup, which means we were passing undefined through the stack.
diff: @@ -1772,7 +1772,7 @@ export default React.createClass({
  hasCancelButton: false,
  });
  - return;
  + return MatrixClientPeg.get();
  }
  }
  return Lifecycle.setLoggedIn(credentials);
  