[Forwardport] Improvements in UI component

- Code refactoring according to Magento code standards

Author: VladimirZaets

app/code/Magento/Ui/view/base/web/js/grid/massactions.js

@@ -175,10 +175,10 @@ define([
          *      invoked if action is confirmed.
          */
         _confirm: function (action, callback) {
-            var confirmData = action.confirm;
-            var data = this.getSelections();
-            var total = data.total ? data.total : 0;
-            var confirmMessage = confirmData.message + ' (' + total + ' record' + (total > 1 ? 's' : '') + ')';
+            var confirmData = action.confirm,
+                data = this.getSelections(),
+                total = data.total ? data.total : 0,
+                confirmMessage = confirmData.message + ' (' + total + ' record' + (total > 1 ? 's' : '') + ')';
 
             confirm({
                 title: confirmData.title,