Remove unused local variables. Fix failing form test.

CHANGELOG

@@ -1,3 +1,5 @@
+* Remove unused local variables from `Element.extend`. Fix one of the form tests to remove `_extendedByPrototype` by setting it to `undefined` rather than `false` (`_extendedByPrototype` being `false` does not force `Element.extend` to re-extend element). (T.J. Crowder, kangax)
+
 * Make test for `escapeHTML`/`unescapeHTML` more strict. (Chrome 1.x escapes "<" and "&" with `innerHTML`, but not ">") (kangax)
 
 * Remove another sniffing from one of DOM tests. Fixes last IE8 failure. (kangax)

src/dom/dom.js

@@ -1690,7 +1690,7 @@ Element.extend = (function() {
         element.nodeType != 1 || element == window) return element;
 
     var methods = Object.clone(Methods),
-      tagName = element.tagName.toUpperCase(), property, value;
+        tagName = element.tagName.toUpperCase();
 
     // extend methods for specific tags
     if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

test/unit/form_test.js

@@ -291,8 +291,8 @@ new Test.Unit.Runner({
 
     form = $('bigform');
     var input = form['tf_text'], select = form['tf_selectOne'];
-    input._extendedByPrototype = select._extendedByPrototype = false;
-
+    input._extendedByPrototype = select._extendedByPrototype = void 0;
+    
     this.assert($(input).anInputMethod);
     this.assert(!input.aSelectMethod);
     this.assertEqual('input', input.anInputMethod());