Bail from wp-langs.php if we don't already have a WordPress environment. fixes #20119.

git-svn-id: https://develop.svn.wordpress.org/trunk@20601 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/js/tinymce/langs/wp-langs.php

@@ -1,13 +1,13 @@
 <?php
 
+if ( ! defined( 'ABSPATH' ) )
+	exit;
+
 // deprecated, not used
 function mce_escape($text) {
 	return esc_js($text);
 }
 
-if ( ! class_exists( '_WP_Editors' ) )
-	require( ABSPATH . WPINC . '/class-wp-editor.php' );
-
 function wp_mce_translation() {
 
 	$default = array(