Fixing download helper in CodeIgniter 2.1.3

MY_download_helper.php

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

if ( ! function_exists('force_download2'))
{
    function force_download2($filename = '', $data = '')
    {
        if (FALSE === strpos($filename, '.'))
        {
            $filename .= '.noextension';
        }

        force_download($filename, $data);
    }
}