From 55de422d55e514cb48feb2f34355387a0615d867 Mon Sep 17 00:00:00 2001
From: Thibaut Courouble <thibaut@me.com>
Date: Sun, 29 May 2016 12:44:51 -0400
Subject: [PATCH] Fix exception in $.scrollParent

---
 assets/javascripts/lib/util.coffee | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/javascripts/lib/util.coffee b/assets/javascripts/lib/util.coffee
index 30f0493e..de7f7077 100644
--- a/assets/javascripts/lib/util.coffee
+++ b/assets/javascripts/lib/util.coffee
@@ -157,7 +157,7 @@ $.offset = (el, container = document.body) ->
 $.scrollParent = (el) ->
   while el = el.parentElement
     break if el.scrollTop > 0
-    break if getComputedStyle(el).overflowY in ['auto', 'scroll']
+    break if getComputedStyle(el)?.overflowY in ['auto', 'scroll']
   el
 
 $.scrollTo = (el, parent, position = 'center', options = {}) ->