Merge pull request #48 from magento-epam/MAGETWO-66666

MAGETWO-66666: Adding a product to cart from category page with an ex…

Author: vital-pantsialeyeu

app/code/Magento/Catalog/view/frontend/web/js/catalog-add-to-cart.js

@@ -163,7 +163,7 @@ define([
 
                 /** @inheritdoc */
                 complete: function (res) {
-                    if (res.state() == 'rejected') {
+                    if (res.state() === 'rejected') {
                         location.reload();
                     }
                 }