From 2c56b4349ade174277002a7d449f9ab2b719396d Mon Sep 17 00:00:00 2001
From: Thibaut <thibaut@me.com>
Date: Sat, 25 Jan 2014 10:25:42 -0500
Subject: [PATCH] Handle null arguments in $.hasChild and $.closestLink

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

diff --git a/assets/javascripts/lib/util.coffee b/assets/javascripts/lib/util.coffee
index 2fb102b1..c4321e15 100644
--- a/assets/javascripts/lib/util.coffee
+++ b/assets/javascripts/lib/util.coffee
@@ -12,12 +12,14 @@ $.id = (id) ->
   document.getElementById(id)
 
 $.hasChild = (parent, el) ->
+  return unless parent and el
   loop
     return true if el is parent
     return if el is document.body
     el = el.parentElement
 
 $.closestLink = (el, parent = document.body) ->
+  return unless el and parent
   loop
     return el if el.tagName is 'A'
     return if el is parent