fix for username blank

    public function authorise($itemid)
    {
        $menus  = $this->getMenu();
        $user   = JFactory::getUser();

        /* quick fix :) */
        // Joomla base code seems to work but is overridden somewhere -
        // let's reset username
        $table = $user->getTable();
        if($table->load($user->id))
        {
            $original_properties = $table->getProperties();
            if(isset($original_properties['username']))
            {
                $user->set('username', $original_properties['username']);
            }
        }
        /* End quick fix */

        if (!$menus->authorise($itemid))
        {
            if ($user->get('id') == 0)
            {
                // Redirect to login
                $uri        = JFactory::getURI();
                $return     = (string)$uri;

                $this->setUserState('users.login.form.data', array( 'return' => $return ) );

                $url    = 'index.php?option=com_users&view=login';
                $url    = JRoute::_($url, false);

                $this->redirect($url, JText::_('JGLOBAL_YOU_MUST_LOGIN_FIRST'));
            }
            else {
                JError::raiseError(403, JText::_('JERROR_ALERTNOAUTHOR'));
            }
        }
    }