E_STRICT fix: put $config in parameter list even if it isn't used.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@204 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/AttrDef/Lang.php

@@ -7,7 +7,7 @@ require_once 'HTMLPurifier/AttrDef.php';
 class HTMLPurifier_AttrDef_Lang extends HTMLPurifier_AttrDef
 {
     
-    function validate($string) {
+    function validate($string, $config = null) {
         
         $string = trim($string);
         if (!$string) return false;