Fix initialization of instance fields.

pkg/kernel/testcases/interpreter/object_field_initializers_test.dart

Index: pkg/kernel/testcases/interpreter/object_field_initializers_test.dart
diff --git a/pkg/kernel/testcases/interpreter/object_field_initializers_test.dart b/pkg/kernel/testcases/interpreter/object_field_initializers_test.dart
index 8c9c7893f06dac44aefac37c7434210999f117e4..88ad9abd1573e45e55b00e89f11d5ce596f9ed8a 100644
--- a/pkg/kernel/testcases/interpreter/object_field_initializers_test.dart
+++ b/pkg/kernel/testcases/interpreter/object_field_initializers_test.dart
@@ -60,6 +60,7 @@ class B {
 }
 
 class C {
+  static String staticFoo = 'foo';

[Dmitry Stefantsov, 2017/08/21 09:40:33]

Looks like this update didn't change anything in the corresponding .expect file.
 An update in the debug output that makes the change visible would be nice :)

   String foo1 = fieldInitializer(1, 'foo1');
   String foo2;
   String foo3 = fieldInitializer(2, 'foo3');