Var wasn't being explicitly declared. Fixes #7226.

diff --git a/src/core.js b/src/core.js
index 3389e83..99521d9 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -312,7 +312,7 @@ jQuery.fn.init.prototype = jQuery.fn;
 
 jQuery.extend = jQuery.fn.extend = function() {
        // copy reference to target object
-       var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy, copyIsArray;
+       var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy, copyIsArray, clone;
 
        // Handle a deep copy situation
        if ( typeof target === "boolean" ) {