From 404e6252d6056c67548247233b667f165b4acd2d Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Wed, 3 Mar 2021 10:51:56 -0500
Subject: [PATCH] Fix regression causing exceptions to be thrown

Related commit:
- https://github.com/gorhill/uBlock/commit/1c3b45f75d0f84d68abb51b15bbdc043464ee3e0

Related issue:
- https://github.com/uBlockOrigin/uBlock-issues/issues/1513
---
 src/js/messaging.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/js/messaging.js b/src/js/messaging.js
index 5b442fc11..a0c9a1e4f 100644
--- a/src/js/messaging.js
+++ b/src/js/messaging.js
@@ -190,7 +190,10 @@ const onMessage = function(request, sender, callback) {
 
     case 'userSettings':
         response = µb.changeUserSettings(request.name, request.value);
-        if ( vAPI.net.canUncloakCnames !== true ) {
+        if (
+            vAPI.net.canUncloakCnames !== true &&
+            response instanceof Object
+        ) {
             response.cnameUncloakEnabled = undefined;
         }
         break;