Ensure that null/undefined args don't choke on native indexOf

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

diff --git a/src/core.js b/src/core.js
index 6fad83b2a48536266b5d8c03f768b0dd41d28f11..4f99e0f4c2dfacd15ec99c0f7c8c893112f8affc 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -587,7 +587,7 @@ jQuery.extend({
        },
 
        inArray: function( elem, arr, i ) {
-               return core_indexOf.call( arr, elem, i );
+               return arr == null ? -1 : core_indexOf.call( arr, elem, i );
        },
 
        merge: function( first, second ) {