From a8e18fdbe68c7c395a2f321d9cf62c234b7656c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bar=C4=B1=C5=9F=20Soner=20U=C5=9Fakl=C4=B1?=
 <barisusakli@gmail.com>
Date: Sun, 13 Sep 2020 19:40:01 -0400
Subject: [PATCH] fix: client side crash if there are no topics

---
 public/src/client/category/tools.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/public/src/client/category/tools.js b/public/src/client/category/tools.js
index ccd6f8fedc..7159466f6a 100644
--- a/public/src/client/category/tools.js
+++ b/public/src/client/category/tools.js
@@ -263,6 +263,9 @@ define('forum/category/tools', [
 	}
 
 	function handlePinnedTopicSort() {
+		if (!ajaxify.data.topics) {
+			return;
+		}
 		var numPinned = ajaxify.data.topics.reduce(function (memo, topic) {
 			memo = topic.pinned ? memo += 1 : memo;
 			return memo;