From 9c18eb2c15a762b4f3137fef9897914c80083a89 Mon Sep 17 00:00:00 2001
From: Anton Ryzhov <anton@ryzhov.me>
Date: Wed, 17 Aug 2011 15:30:12 +0400
Subject: [PATCH] $.inArray doesn't crush IE6 and Chrome if second argument is
 `null` or `undefined`

---
 src/core.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/core.js b/src/core.js
index 7a77ae132..db832a0bf 100644
--- a/src/core.js
+++ b/src/core.js
@@ -678,6 +678,10 @@ jQuery.extend({
 	},
 
 	inArray: function( elem, array ) {
+		if (!jQuery.isArray(array))
+		{
+			return -1;
+		}
 
 		if ( indexOf ) {
 			return indexOf.call( array, elem );