From 1cea08f14f8aa270795d5fe55497aed0fc456d52 Mon Sep 17 00:00:00 2001
From: Richard Pospesel <richard@torproject.org>
Date: Mon, 5 Aug 2019 15:44:15 -0700
Subject: [PATCH] Bug 31344: Actually register SecurityLevelPreference's
 'unload' callback in privacy.js

---
 browser/components/preferences/in-content/privacy.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/browser/components/preferences/in-content/privacy.js b/browser/components/preferences/in-content/privacy.js
index 7583d4e66290f..e9112a2c467e5 100644
--- a/browser/components/preferences/in-content/privacy.js
+++ b/browser/components/preferences/in-content/privacy.js
@@ -240,6 +240,7 @@ var gPrivacyPane = {
       window.removeEventListener("unload", unload);
       SecurityLevelPreferences.uninit();
     };
+    window.addEventListener("unload", unload);
   },
 
   /**
-- 
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