Issue #3273927 by FernandoGonzalezV, apaderno, golubovicm: each() is...

   *   The current level which is being processed.

   */

  protected function mapRows(array &$output, array &$rows, $parent_id = 0, $level = 0) {

    while (list($key, $row) = each($rows)) {

    foreach($rows as $key => $row){

      reset($rows);

      $item = $this->getTermItem($row);

      $current = $item['term'];