From 326643d08accb816ef1fbbf352582716ffd234b6 Mon Sep 17 00:00:00 2001
From: Jarek Radosz <jradosz@gmail.com>
Date: Tue, 19 Jul 2022 15:32:26 +0200
Subject: [PATCH] FIX: `isExistingIconId()` regressed in #17553 (#17570)
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I missed a single `?` character 😔
---
 .../javascripts/discourse-common/addon/lib/icon-library.js      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/assets/javascripts/discourse-common/addon/lib/icon-library.js b/app/assets/javascripts/discourse-common/addon/lib/icon-library.js
index 86650a1c701..7c3367415dd 100644
--- a/app/assets/javascripts/discourse-common/addon/lib/icon-library.js
+++ b/app/assets/javascripts/discourse-common/addon/lib/icon-library.js
@@ -121,7 +121,7 @@ export function setIconList(iconList) {
 }
 
 export function isExistingIconId(id) {
-  return _iconList.includes(id);
+  return _iconList?.includes(id);
 }
 
 function warnIfMissing(id) {