Align PreParser for loop early error-checking with Parser

test/message/for-loop-invalid-lhs.js

Index: test/message/for-loop-invalid-lhs.js
diff --git a/test/message/for-loop-invalid-lhs.js b/test/message/for-loop-invalid-lhs.js
new file mode 100644
index 0000000000000000000000000000000000000000..c545230348a8a73f60430673557d7c5ac1c467e9
--- /dev/null
+++ b/test/message/for-loop-invalid-lhs.js
@@ -0,0 +1,9 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// TODO(adamk): Remove flag after the test runner tests all message tests with
+// the preparser: https://code.google.com/p/v8/issues/detail?id=4372
+// Flags: --min-preparse-length=0
+
+function f() { for ("unassignable" in {}); }