Always cache the original target in a handle on the IC.

src/stub-cache.cc

Index: src/stub-cache.cc
diff --git a/src/stub-cache.cc b/src/stub-cache.cc
index eec879983b281408d85b1819c49733335e9d6150..f78ab731064c72981dd57dee5bdb573266b1a865 100644
--- a/src/stub-cache.cc
+++ b/src/stub-cache.cc
@@ -1257,12 +1257,12 @@ static MaybeObject* ThrowReferenceError(Isolate* isolate, Name* name) {
   // If the load is non-contextual, just return the undefined result.
   // Note that both keyed and non-keyed loads may end up here, so we
   // can't use either LoadIC or KeyedLoadIC constructors.
+  HandleScope scope(isolate);
   IC ic(IC::NO_EXTRA_FRAME, isolate);
   ASSERT(ic.target()->is_load_stub() || ic.target()->is_keyed_load_stub());
   if (!ic.SlowIsUndeclaredGlobal()) return isolate->heap()->undefined_value();
 
   // Throw a reference error.
-  HandleScope scope(isolate);
   Handle<Name> name_handle(name);
   Handle<Object> error =
       isolate->factory()->NewReferenceError("not_defined",