updateCurrentUnread: don't crash if counter element is not available

js/Headlines.js

@@ -547,13 +547,15 @@ define(["dojo/_base/declare"], function (declare) {
 			return tmp.firstChild;
 		},
 		updateCurrentUnread: function() {
-			const feed_unread = Feeds.getUnread(Feeds.getActive(), Feeds.activeIsCat());
+			if ($("feed_current_unread")) {
+				const feed_unread = Feeds.getUnread(Feeds.getActive(), Feeds.activeIsCat());
 
-			if (feed_unread > 0 && !Element.visible("feeds-holder")) {
-				$("feed_current_unread").innerText = feed_unread;
-				Element.show("feed_current_unread");
-			} else {
-				Element.hide("feed_current_unread");
+				if (feed_unread > 0 && !Element.visible("feeds-holder")) {
+					$("feed_current_unread").innerText = feed_unread;
+					Element.show("feed_current_unread");
+				} else {
+					Element.hide("feed_current_unread");
+				}
 			}
 		},
 		onLoaded: function (transport, offset, append) {