Do not create unresolved variables when parsing arrow functions lazily

test/mjsunit/regress/regress-3501.js

Index: test/mjsunit/regress/regress-3501.js
diff --git a/test/mjsunit/compiler/regress-445732.js b/test/mjsunit/regress/regress-3501.js
similarity index 51%
copy from test/mjsunit/compiler/regress-445732.js
copy to test/mjsunit/regress/regress-3501.js
index 199a29a5f859dbe2e5d63c3cc6cfa06a76b0be99..4b449e458f545b5758a8a3ca579be1913becc29a 100644
--- a/test/mjsunit/compiler/regress-445732.js
+++ b/test/mjsunit/regress/regress-3501.js
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --turbo-asm
+// Flags: --harmony-arrow-functions
 
-"use asm";
+// See: http://code.google.com/p/v8/issues/detail?id=3501
 
-%NeverOptimizeFunction(f);
-function f() { }
-f();
+"use strict";
+let lift = f => (x, k) => k (f (x));
+lift(isNaN);