From ed3c05e74c4e332929b00e1613fcdd88988721a3 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@gmail.com>
Date: Tue, 25 Oct 2011 23:20:31 -0600
Subject: [PATCH] `_.isEqual`: Fix an erroneous check for the `constructor`
 property.

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

diff --git a/underscore.js b/underscore.js
index 19f407acd..bac024592 100644
--- a/underscore.js
+++ b/underscore.js
@@ -726,7 +726,7 @@
       }
     } else {
       // Objects with different constructors are not equivalent.
-      if ("constructor" in a == "constructor" in b && a.constructor != b.constructor) return false;
+      if ("constructor" in a != "constructor" in b || a.constructor != b.constructor) return false;
       // Deep compare objects.
       for (var key in a) {
         if (hasOwnProperty.call(a, key)) {