Fixed applying 'cds-loading-error' to all thumbnail items instead of only the affected images

patterns/molecules/gallery/js/gallery_carousel.js

@@ -64,10 +64,13 @@
       .on('error', function () {
         $(this).prev('span').removeClass('cds-background-hidden');
         $(this).closest('figure').addClass('loading-cds-error');
+        var errorurl = $(this).attr('src'); //gets the url which throws the error to find it afterwards in the thumbnail items
+
         $(this).closest('.owl-carousel').find('.owl-thumb-item').each(function () {
           var background = $(this).attr('style');
-          if (background.indexOf("//cds.cern.ch/") >= 0) {
+          if (background.indexOf(errorurl) >= 0) {
             $(this).addClass('loading-cds-error');
+            return false; //returning false to break out of the each() loop as the thumb item was found
           }
         });
       });