fix some tests

tests/language/src/TypeVariableScopeTest.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.
 
 // Test that type variables aren't in scope of static methods and factories.
 
 class Foo<T> {
   // T is not in scope for a static method.
   static
   Foo<T> /// 00: compile-time error
@@ skipping 21 matching lines @@
                     Foo<T> /// 07: compile-time error
                     value) {}
 }
 
 interface I<X> factory Foo<X> {
   I(I<X> i);
 }
 
 main() {
   Foo.m(null);
+  new I(null);

[jimhug, 2011/10/31 23:36:31]

Without this call, error #04 may not be detected because the factory is never
invoked and so it is legal not to check its body.

[ngeoffray, 2011/11/01 08:17:34]

OK.

 }