Fix to stop showing formatting changes in mce fields.

Text_Diff.patch

+diff -ruN Text/Diff/Renderer/inline.php Text.new/Diff/Renderer/inline.php
+--- Text/Diff/Renderer/inline.php	2007-09-25 16:54:28.399171218 -0500
++++ Text.new/Diff/Renderer/inline.php	2007-09-25 16:54:51.153562651 -0500
+@@ -149,7 +149,7 @@
+ 
+     function _encode(&$string)
+     {
+-        $string = htmlspecialchars($string);
++        // $string = htmlspecialchars($string);
+     }
+ 
+ }