[BUGFIX] document.querySelector returns NULL if no element is found, not 0

Resources/Public/JavaScript/ScrollBrowser.js

@@ -71,7 +71,7 @@ export default class ScrollBrowser {
 			}
 
 			let resultList = document.querySelector(`.tx-sgnews-list-${result.dataset.record}`);
-			if (!resultList.length) {
+			if (!resultList) {
 				resultList = document.querySelector('.tx-sgnews-list');
 			}
 			children.forEach((child) => {