From f7263047bfd45f7fdd08d416872cacc4901148c5 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Wed, 21 Dec 2016 15:22:21 -0600
Subject: [PATCH] Use a strict `undefined` check for `arity` in `createWrap`.

---
 lodash.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lodash.js b/lodash.js
index 6cd4623aa..067a55cef 100644
--- a/lodash.js
+++ b/lodash.js
@@ -5559,7 +5559,7 @@
       thisArg = newData[2];
       partials = newData[3];
       holders = newData[4];
-      arity = newData[9] = newData[9] == null
+      arity = newData[9] = newData[9] === undefined
         ? (isBindKey ? 0 : func.length)
         : nativeMax(newData[9] - length, 0);