Fix v8::Object::DeleteHiddenValue to not bail when there are no hidden proper...

src/api.cc

Index: src/api.cc
===================================================================
--- src/api.cc	(revision 1686)
+++ src/api.cc	(working copy)
@@ -2077,13 +2077,13 @@
   ON_BAILOUT("v8::DeleteHiddenValue()", return false);
   ENTER_V8;
   i::Handle<i::JSObject> self = Utils::OpenHandle(this);
-  i::Handle<i::JSObject> hidden_props(
-      i::JSObject::cast(*i::GetHiddenProperties(self, false)));
+  i::Handle<i::Object> hidden_props(i::GetHiddenProperties(self, false));
   if (hidden_props->IsUndefined()) {
-    return false;
+    return true;
   }
+  i::Handle<i::JSObject> js_obj(i::JSObject::cast(*hidden_props));
   i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
-  return i::DeleteProperty(hidden_props, key_obj)->IsTrue();
+  return i::DeleteProperty(js_obj, key_obj)->IsTrue();
 }