JS-323: Gallery setting for configurable product

- Static test improvment

Author: uharbachou

app/code/Magento/Swatches/view/frontend/web/js/swatch-renderer.js

@@ -912,7 +912,8 @@ define([
             var justAnImage = images[0],
                 updateImg,
                 imagesToUpdate,
-                gallery = context.find(this.options.mediaGallerySelector).data('gallery');
+                gallery = context.find(this.options.mediaGallerySelector).data('gallery'),
+                item;
 
             if (images) {
                 imagesToUpdate = this._setImageType($.extend(true, [], images));
@@ -924,11 +925,8 @@ define([
                         return img.isMain;
                     });
 
-                    if (updateImg.length) {
-                        gallery.updateDataByIndex(0, updateImg[0]);
-                    } else {
-                        gallery.updateDataByIndex(0, imagesToUpdate[0]);
-                    }
+                    item = updateImg.length ? updateImg[0]: imagesToUpdate[0];
+                    gallery.updateDataByIndex(0, item);
 
                     gallery.seek(1);
                 } else {