$retval = $articleObj->doRollback($username, $summary, $params['token'], $params['markbot'], $details);
if(!empty($retval))
// We don't care about multiple errors, just report one of them
$this->dieUsageMsg(current($retval));
$retval = $articleObj->doRollback($username, $summary, $params['token'], $params['markbot'], $details);
if(!empty($retval))
// We don't care about multiple errors, just report one of them
$this->dieUsageMsg(current($retval));