fix content-length calculation typo in InfoCard tokenservice RSTR

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@1450 44740490-163a-0410-bde0-09ae8108e29a

modules/InfoCard/www/tokenservice.php

@@ -118,7 +118,7 @@ if ($authenticated){
 }
 
 
-Header('Content-length: '.strlen($buf)+1);
+Header('Content-length: '.strlen($response)+1);
 print($response);
 
 //LOG