---- thunderbird-78.2.2/comm/mail/base/content/specialTabs.js.orig 2020-09-14 01:07:47.922347748 +0200
-+++ thunderbird-78.2.2/comm/mail/base/content/specialTabs.js 2020-09-14 01:07:51.568995951 +0200
-@@ -1048,7 +1048,7 @@
- Services.prefs.setCharPref("mailnews.start_page_override.mstone", mstone);
- }
-
-- let update = Cc["@mozilla.org/updates/update-manager;1"].getService(
-+ let update = AppConstants.MOZ_UPDATER && Cc["@mozilla.org/updates/update-manager;1"].getService(
- Ci.nsIUpdateManager
- ).activeUpdate;
-