From eab8b4b6c89f85a494be6f9017e0dbaec9fd502a Mon Sep 17 00:00:00 2001
From: Shane Kilkelly <shane@kilkelly.me>
Date: Fri, 11 Sep 2015 14:07:06 +0100
Subject: [PATCH] Null safe access of `id` property, needed as user can be
 null.

---
 services/track-changes/app/coffee/UpdatesManager.coffee | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/services/track-changes/app/coffee/UpdatesManager.coffee b/services/track-changes/app/coffee/UpdatesManager.coffee
index 49c2b6e1af..9bea5ba177 100644
--- a/services/track-changes/app/coffee/UpdatesManager.coffee
+++ b/services/track-changes/app/coffee/UpdatesManager.coffee
@@ -192,7 +192,7 @@ module.exports = UpdatesManager =
 				# if not, add them to the users list of the earliest update
 				userExists = false
 				for user in earliestUpdate.meta.users
-					if (!user and !update.meta.user) or (user.id == update.meta.user?.id)
+					if (!user and !update.meta.user) or (user?.id == update.meta.user?.id)
 						userExists = true
 						break
 				if !userExists