Remove prototype checks for leaf maps in optimized code.

src/objects-visiting-inl.h

Index: src/objects-visiting-inl.h
diff --git a/src/objects-visiting-inl.h b/src/objects-visiting-inl.h
index 93245c0f5fcd43e1b56580053c6232df119ef8f8..beb07b564497d7d87e044adbce43d278a6a12356 100644
--- a/src/objects-visiting-inl.h
+++ b/src/objects-visiting-inl.h
@@ -426,7 +426,7 @@ void StaticMarkingVisitor<StaticVisitor>::MarkMapContents(
   // Mark prototype dependent codes array but do not push it onto marking
   // stack, this will make references from it weak. We will clean dead
   // codes when we iterate over maps in ClearNonLiveTransitions.
-  Object** slot = HeapObject::RawField(map, Map::kDependentCodesOffset);
+  Object** slot = HeapObject::RawField(map, Map::kDependentCodeOffset);
   HeapObject* obj = HeapObject::cast(*slot);
   heap->mark_compact_collector()->RecordSlot(slot, slot, obj);
   StaticVisitor::MarkObjectWithoutPush(heap, obj);