Description:
------------
The idn_to_utf8 function returns an error when the URL has a "-" sign at the end. 

Test script:
---------------
$x = idn_to_utf8('www.website.com/asa-asda-asd-.html');
if (!$x) 
	echo 'error';
else
	echo $x;
//return error


$x = idn_to_utf8('www.website.com/asa-asda-asd-');
if (!$x) 
	echo 'error';
else
	echo $x;
//return error


$x = idn_to_utf8('www.website.com/asa-asda-asd.html');
if (!$x) 
	echo 'error';
else
	echo $x;
// return url