Merge branch 'MAGETWO-54401' of https://github.com/magento-tango/magento2ce into MAGETWO-54731

Author: shiftedreality

lib/web/mage/adminhtml/browser.js

@@ -31,12 +31,14 @@ define([
         },
         openDialog: function(url, width, height, title, options) {
             var windowId = this.windowId,
-                content = '<div class="popup-window magento-message" "id="' + windowId + '"></div>',
+                content = '<div class="popup-window magento-message" id="' + windowId + '"></div>',
                 self = this;
 
             if (this.modal) {
                 this.modal.html($(content).html());
-                this.modal.modal('option', 'closed', options.closed);
+                if (options && typeof options.closed !== 'undefined') {
+                    this.modal.modal('option', 'closed', options.closed);
+                }
             } else {
                 this.modal = $(content).modal($.extend({
                     title:  title || 'Insert File...',