Migrate block 43.

tests/language/bad_initializer2_negative_test.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-// Variable initializer must not reference the initialized variable.
-
-import "package:expect/expect.dart";
-
-class BadInitializer2NegativeTest {
-  static testMain() {
-    var foo = (int n) {
-      if (n == 0) {
-        return 0;
-      } else {
-        return 1 + foo(n - 1); // <-- self-reference to closure foo.
-      }
-    };
-    Expect.equals(4, foo(4));
-  }
-}
-
-main() {
-  BadInitializer2NegativeTest.testMain();
-}