From b2280b2d728ba587387b64affda1cc66e446c48d Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Mon, 2 Jun 2014 09:29:16 -0700
Subject: [PATCH] Fixed `_.keys` in Safari 5.0.5.

---
 lodash.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lodash.js b/lodash.js
index 8ce21c526..d7e3780ba 100644
--- a/lodash.js
+++ b/lodash.js
@@ -6954,8 +6954,9 @@
       var Ctor = object && object.constructor,
           length = object ? object.length : 0;
 
-      if ((typeof length == 'number' && length > 0) ||
-          (Ctor && object === Ctor.prototype)) {
+      if ((Ctor && object === Ctor.prototype) ||
+          (typeof length == 'number' && length > 0) ||
+          (support.enumPrototypes && typeof object == 'function')) {
         return shimKeys(object);
       }
       return isObject(object) ? nativeKeys(object) : [];