From 163b96b5b3b7654b12d995c4057df4c265b6e434 Mon Sep 17 00:00:00 2001
From: Kirk Steuber <ksteuber@mozilla.com>
Date: Mon, 15 Apr 2019 21:23:04 +0000
Subject: [PATCH] Bug 1544562 - Call onUnload when about:preferences is closed
 r=rstrong

Differential Revision: https://phabricator.services.mozilla.com/D27591

--HG--
extra : moz-landing-system : lando
---
 browser/components/preferences/in-content/main.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/browser/components/preferences/in-content/main.js b/browser/components/preferences/in-content/main.js
index 47b3b324dcca..222a73c7ce72 100644
--- a/browser/components/preferences/in-content/main.js
+++ b/browser/components/preferences/in-content/main.js
@@ -1436,6 +1436,9 @@ var gMainPane = {
   handleEvent(aEvent) {
     if (aEvent.type == "unload") {
       this.destroy();
+      if (AppConstants.MOZ_UPDATER) {
+        onUnload();
+      }
     }
   },