Fix access to fields that didn't exist in the class.

tests/language/cast2_test.dart

+// Test created from multitest named /home/floitsch/code/dart_green/dart/tests/language/cast_test.dart.

[kasperl, 2012/08/16 12:49:05]

Long line. Do we have to have that here?

[floitsch, 2012/08/16 14:21:42]

No. This is just an artifact of copying the original cast test.
done.

+// Copyright (c) 2012, 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.
+// Dart test program for constructors and initializers.
+
+// Test 'expression as Type' casts.
+
+class C {
+  final int foo = 42;
+}
+
+class D extends C {
+  final int bar = 37;
+}
+
+main() {
+  Object oc = new C();
+  Object od = new D();
+
+  (oc as Dynamic).bar;  /// 01: runtime error
+}
+
+