From df4e306c643de6f1322f3e0a121e98a1ce30533b Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Fri, 8 Aug 2014 10:43:26 -0700
Subject: [PATCH] Add `length` check to avoid extra work in `initArrayClone`.

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

diff --git a/lodash.js b/lodash.js
index ee8ecf89f..cb30dd3ed 100644
--- a/lodash.js
+++ b/lodash.js
@@ -2849,7 +2849,7 @@
         }
       }
       // add array properties assigned by `RegExp#exec`
-      if (typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
+      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
         result.index = array.index;
         result.input = array.input;
       }