CodeIgniter MY_Loader, displays used template before actual output in HTML comment

MY_Loader.php

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

class MY_Loader extends CI_Loader 
{
  function view($view, $vars = array(), $return = FALSE)
	{
    if ($return != TRUE)
      echo "<!-- $view -->\n";
		return ($return == TRUE ? "<!-- $view -->\n" : '') . $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_object_to_array($vars), '_ci_return' => $return));
	}
}