Return MaybeHandle from Object::ToSmi.

src/elements.cc

Index: src/elements.cc
diff --git a/src/elements.cc b/src/elements.cc
index 26b722beaaf88dbd7d620be2d3902af23dcf7f05..580a7186bdaa691fe210c3947b8b322b9f4ac47e 100644
--- a/src/elements.cc
+++ b/src/elements.cc
@@ -1848,9 +1848,10 @@ MaybeHandle<Object> ElementsAccessorBase<ElementsAccessorSubclass,
   Handle<JSArray> array = Handle<JSArray>::cast(obj);
 
   // Fast case: The new length fits into a Smi.
-  Handle<Object> smi_length = Object::ToSmi(isolate, length);
+  Handle<Object> smi_length;
 
-  if (!smi_length.is_null() && smi_length->IsSmi()) {
+  if (Object::ToSmi(isolate, length).ToHandle(&smi_length) &&
+      smi_length->IsSmi()) {
     const int value = Handle<Smi>::cast(smi_length)->value();
     if (value >= 0) {
       Handle<Object> new_length = ElementsAccessorSubclass::