Use Null as "no accessor" in AccessorPair instead of TheHole

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 31f8a80ea1a78344bdffb6a8f5f64c501ddbdf7c..0674d46219d2a48f3f19ffaf190d0a01ad6d5612 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -190,8 +190,8 @@ Handle<OrderedHashMap> Factory::NewOrderedHashMap() {
 Handle<AccessorPair> Factory::NewAccessorPair() {
   Handle<AccessorPair> accessors =
       Handle<AccessorPair>::cast(NewStruct(ACCESSOR_PAIR_TYPE));
-  accessors->set_getter(*the_hole_value(), SKIP_WRITE_BARRIER);
-  accessors->set_setter(*the_hole_value(), SKIP_WRITE_BARRIER);
+  accessors->set_getter(*null_value(), SKIP_WRITE_BARRIER);
+  accessors->set_setter(*null_value(), SKIP_WRITE_BARRIER);
   return accessors;
 }