/**
  * Verifies the title. Does the same processing as the general title verifier,
  * but also requires there be a title.
  *
  * @param	string	Title text
  *
  * @return	bool	Whether the title is valid
  */
 function verify_title(&$title)
 {
     if (!parent::verify_title($title)) {
         return false;
     }
     if ($title == '') {
         $this->error('nosubject');
         return false;
     }
     if ($this->condition and !$this->info['skip_moderator_log'] and $title != $this->existing['title']) {
         require_once DIR . '/includes/functions_log_error.php';
         $logtype = fetch_modlogtypes('thread_title_x_changed');
         $this->modlog[] = array('userid' => intval($this->registry->userinfo['userid']), 'type' => intval($logtype), 'action' => $this->existing['title']);
     }
     return true;
 }