Remove trailing whitespace.

Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>

library/HTMLPurifier/URIScheme/nntp.php

@@ -4,16 +4,16 @@
  * Validates nntp (Network News Transfer Protocol) as defined by generic RFC 1738
  */
 class HTMLPurifier_URIScheme_nntp extends HTMLPurifier_URIScheme {
-    
+
     public $default_port = 119;
     public $browsable = false;
-    
+
     public function validate(&$uri, $config, $context) {
         parent::validate($uri, $config, $context);
         $uri->userinfo = null;
         $uri->query    = null;
         return true;
     }
-    
+
 }