Redirect not working

I have Number up / down widget. If I set option "Behaviour when user has no permission to vote" to "Redirect to login and show message" and try to vote by user without permission to vote, the widget disappears and gets replaced by string "http://example.com/user/login-to-rate?destination=X"

Which means this condition is triggered:

       if ($ahah) {
          print url('user/login-to-rate', array('query' => $query, 'absolute' => TRUE));
          module_invoke_all('exit') & exit;
        }
        else {
          drupal_goto('user/login-to-rate', array('query' => $query));
        }

So my question is: what should I do to make redirect work?