Yii的smarty插件 ESmartyViewRenderer 中的错误更正

class ESmartyViewRenderer extends CApplicationComponent implements IViewRenderer
{
    省略..................

    public function renderFile($context,$sourceFile,$data,$return) {
        // current controller properties will be accessible as {$this.property}
        $data['this'] = $context;
        // Yii::app()->... is available as {Yii->...} (deprecated, use {Yii::app()->...} instead, Smarty3 supports this.)
        $data['Yii'] = Yii::app();
        // time and memory information
        $data['TIME'] = sprintf('%0.5f',Yii::getLogger()->getExecutionTime());
        $data['MEMORY'] = round(Yii::getLogger()->getMemoryUsage()/(1024*1024),2).' MB';

        // check if view file exists
        if(!is_file($sourceFile) || ($file=realpath($sourceFile))===false)
            throw new CException(Yii::t('yiiext','View file "{file}" does not exist.', array('{file}'=>$sourceFile)));

        $template = $this->smarty->createTemplate($sourceFile, null, null, $data, false);

        //render or return
        if($return){
            /*
             * 源代码错误！
             * return $template->fetch($sourceFile);
             * 正确的调用方法如下,当指定参数时,必须指定所有相关的参数
             * return $this->smarty->fetch($sourceFile, null, null, $data, false);
             */

            return $template->fetch();    // 所有参数均从 $template 对象继承
        } else {
            /*
             * 源代码错误！
             * $template->display($sourceFile);
             * 正确的调用方法如下,当指定参数时,必须指定所有相关的参数
             * $this->smarty->display($sourceFile, null, null, $data, false);
             */

            $template->display();    // 所有参数均从 $template 对象继承
        }
    }
}