angular-cookies.js in angularjs-rails-1.4.7

- old
+ new

@@ -1,7 +1,7 @@
 /**
- * @license AngularJS v1.4.4
+ * @license AngularJS v1.4.7
  * (c) 2010-2015 Google, Inc. http://angularjs.org
  * License: MIT
  */
 (function(window, angular, undefined) {'use strict';
 
@@ -276,10 +276,10 @@
   function buildCookieString(name, value, options) {
     var path, expires;
     options = options || {};
     expires = options.expires;
     path = angular.isDefined(options.path) ? options.path : cookiePath;
-    if (value === undefined) {
+    if (angular.isUndefined(value)) {
       expires = 'Thu, 01 Jan 1970 00:00:00 GMT';
       value = '';
     }
     if (angular.isString(expires)) {
       expires = new Date(expires);