Filter empty exposed links

/**
 * Implements hook_form_FORM_ID_alter().
 */
function hook_form_views_exposed_form_alter(&$form, $form_state) {
 
  // Define important Variables
  $identifier = 'cat';
  global $language;
 
 
  // prevent recursion - only execute once
  static $called = 0;
 
  if ($called === $form['#id']) {
    return;
  }
 
  $called = $form['#id']; // flag as called
 
 
  // Now we're checking each identifier on options
  $tids = array();
  foreach ($form[$identifier]['#options'] as $key => $option) {
    if ($key != 'All') {
 
      $tids[$key]['tid'] = $key;
 
      // Checking if there is a entry it this tid in taxonomy_index
      // Joining the node table so we can check on language.
      $query = db_select('taxonomy_index', 't');
 
      $query ->join('node', 'n', 't.nid = n.nid');
 
      $query ->fields('t')
          ->fields('n')
          ->condition('t.tid', $key, '=')
          ->condition('n.language', $language->language, '=')
          ->condition('n.status', 1, '=');
      $result = $query->execute();
 
      $tids[$key]['count'] = $result->rowCount();
 
      // Removing the option without entrys
      if($tids[$key]['count'] == 0){
        unset($form[$identifier]['#options'][$key]);
      }
    }
  } 
}