Remove trailing whitespace.

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

library/HTMLPurifier/URIScheme.php

@@ -5,24 +5,24 @@
  */
 class HTMLPurifier_URIScheme
 {
-    
+
     /**
      * Scheme's default port (integer)
      */
     public $default_port = null;
-    
+
     /**
      * Whether or not URIs of this schem are locatable by a browser
      * http and ftp are accessible, while mailto and news are not.
      */
     public $browsable = false;
-    
+
     /**
      * Whether or not the URI always uses <hier_part>, resolves edge cases
      * with making relative URIs absolute
      */
     public $hierarchical = false;
-    
+
     /**
      * Validates the components of a URI
      * @note This implementation should be called by children if they define
@@ -36,6 +36,6 @@ class HTMLPurifier_URIScheme
         if ($this->default_port == $uri->port) $uri->port = null;
         return true;
     }
-    
+
 }