Remove trailing whitespace.

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

library/HTMLPurifier/URIScheme/http.php

@@ -4,16 +4,16 @@
  * Validates http (HyperText Transfer Protocol) as defined by RFC 2616
  */
 class HTMLPurifier_URIScheme_http extends HTMLPurifier_URIScheme {
-    
+
     public $default_port = 80;
     public $browsable = true;
     public $hierarchical = true;
-    
+
     public function validate(&$uri, $config, $context) {
         parent::validate($uri, $config, $context);
         $uri->userinfo = null;
         return true;
     }
-    
+
 }