Fix TypedArray Property optimizations

src/accessors.cc

Index: src/accessors.cc
diff --git a/src/accessors.cc b/src/accessors.cc
index ccae58255adecc2b6ae8037c0bccfc7ad5ece6bb..69f4e3e0dc4b0e95baaaaa656bbcd6ec11bba5c6 100644
--- a/src/accessors.cc
+++ b/src/accessors.cc
@@ -116,12 +116,12 @@ bool Accessors::IsJSArrayBufferViewFieldAccessor(Handle<Map> map,
       LookupIterator it(proto, name);
       if (!it.IsFound()) return false;
 
-      Object* original_proto =
-          JSFunction::cast(map->GetConstructor())->prototype();
+      HandleScope scope(isolate);

[adamk, 2016/05/04 18:44:36]

You shouldn't need to create a HandleScope here, you already have one on the
stack somewhere (else the above Handle creation wouldn't work).

[gsathya, 2016/05/05 21:16:06]

Done.

+      Handle<Object> typed_array_proto = isolate->typed_array_prototype();
 
       // Property is not configurable. It is enough to verify that
       // the holder is the same.
-      return *it.GetHolder<Object>() == original_proto;
+      return *it.GetHolder<Object>() == *typed_array_proto;
     }
     case JS_DATA_VIEW_TYPE:
       return CheckForName(name, isolate->factory()->byte_length_string(),