Set `revision.settings` via short-circuit check for `window` property: `window._wpRevisionsSettings || {}`

Props ericlewis.
Fixes #30218.

Built from https://develop.svn.wordpress.org/trunk@30130


git-svn-id: http://core.svn.wordpress.org/trunk@30130 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/revisions.js

@@ -1,4 +1,4 @@
-/* global _wpRevisionsSettings, isRtl */
+/* global isRtl */
 /**
  * @file Revisions interface functions, Backbone classes and
  * the revisions.php document.ready bootstrap.
@@ -14,8 +14,8 @@ window.wp = window.wp || {};
 	 */
 	revisions = wp.revisions = { model: {}, view: {}, controller: {} };
 
-	// Link settings.
-	revisions.settings = _.isUndefined( _wpRevisionsSettings ) ? {} : _wpRevisionsSettings;
+	// Link post revisions data served from the back-end.
+	revisions.settings = window._wpRevisionsSettings || {};
 
 	// For debugging
 	revisions.debug = false;

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-alpha-30129';
+$wp_version = '4.1-alpha-30130';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.