Update enum_const_test to isolate problem.

tests/language/enum_const_test.dart

Index: tests/language/enum_const_test.dart
diff --git a/tests/language/enum_const_test.dart b/tests/language/enum_const_test.dart
index 0eb7204a21e78c7dd7a4b404dd0ba3dd8b60b696..54ba24f51c3bd1619053e552179e8782ef3fd13e 100644
--- a/tests/language/enum_const_test.dart
+++ b/tests/language/enum_const_test.dart
@@ -16,7 +16,13 @@ verify(val) {
 }
 
 main() {
-  verify(Foo.BAR);
+  test1(); /// 01: ok
+  test2(); /// 02: ok
+}
+
+test1() => verify(Foo.BAR);
+
+test2() {
   var rp;
   rp = new RawReceivePort((val) {
     verify(val);