Zap prototype transitions in release mode, too.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index e7dcd631a85eadf901eb9c36659d067e49f81998..55b88301b1a1b4b809ac42370d93196366ffd38b 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -5368,12 +5368,10 @@ void Map::SetPrototypeTransitions(
     Handle<Map> map, Handle<FixedArray> proto_transitions) {
   EnsureHasTransitionArray(map);
   int old_number_of_transitions = map->NumberOfProtoTransitions();
-#ifdef DEBUG
-  if (map->HasPrototypeTransitions()) {
+  if (Heap::ShouldZapGarbage() && map->HasPrototypeTransitions()) {
     DCHECK(map->GetPrototypeTransitions() != *proto_transitions);
     map->ZapPrototypeTransitions();
   }
-#endif
   map->transitions()->SetPrototypeTransitions(*proto_transitions);
   map->SetNumberOfProtoTransitions(old_number_of_transitions);
 }