Fix

src/stub-cache.cc

Index: src/stub-cache.cc
diff --git a/src/stub-cache.cc b/src/stub-cache.cc
index 14bcc07039f607ca5e516abc04ac77b82e944a45..5381ff15326321cdc0cd7aab28221bc0bd405f58 100644
--- a/src/stub-cache.cc
+++ b/src/stub-cache.cc
@@ -969,11 +969,11 @@ Handle<Code> NamedStoreHandlerCompiler::CompileStoreTransition(
     // Find the top object.
     Handle<JSObject> last;
     PrototypeIterator iter(isolate(), holder());
-    do {
+    while (!iter.IsAtEnd()) {
       last = Handle<JSObject>::cast(PrototypeIterator::GetCurrent(iter));
       iter.Advance();
-    } while (!iter.IsAtEnd());
-    set_holder(last);
+    }
+    if (!last.is_null()) set_holder(last);
   }
 
   Register holder_reg = FrontendHeader(receiver(), name, &miss);