Remove trailing whitespace.

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

library/HTMLPurifier/Token/Comment.php

@@ -8,7 +8,7 @@ class HTMLPurifier_Token_Comment extends HTMLPurifier_Token
     public $data; /**< Character data within comment. */
     /**
      * Transparent constructor.
-     * 
+     *
      * @param $data String comment data.
      */
     public function __construct($data, $line = null, $col = null) {