Ticket #14245: 14245.patch

wp-includes/post-template.php

@@ -224 +224 @@
                 }
 
         }
+        static $callback;
+        ($callback === null) && ($callback = create_function('$match', 'return "&#" . base_convert($match[1], 16, 10) . ";";'));
         if ( $preview ) // preview fix for javascript bug with foreign languages
-                $output =       preg_replace_callback('/\%u([0-9A-F]{4})/', create_function('$match', 'return "&#" . base_convert($match[1], 16, 10) . ";";'), $output);
+                $output =       preg_replace_callback('/\%u([0-9A-F]{4})/', $callback, $output);
 
         return $output;
 }