Check if HTTP_RAW_POST_DATA is set to avoid undefined var warning. Props Juergen. fixes #2350

git-svn-id: http://svn.automattic.com/wordpress/trunk@3498 1a063a9b-81f0-0310-95a4-ce76da25c4cd

xmlrpc.php

@@ -6,6 +6,7 @@ define('XMLRPC_REQUEST', true);
 $_COOKIE = array();
 
 # fix for mozBlog and other cases where '<?xml' isn't on the very first line
+if ( isset($HTTP_RAW_POST_DATA) )
 	$HTTP_RAW_POST_DATA = trim($HTTP_RAW_POST_DATA);
 
 include('./wp-config.php');