PackedByteArray can't init and pass to const Variant **

I can't pass PackedByteArray to Variant.call and get error with NIL Type

gdscript code:
```
$Example.SendRequest("connector.joingame", "aaa".to_ascii_buffer(), func(x :PackedByteArray):
if (x.size() == 0):
prints("ok")
else:
prints("nono")
)
```

c++ code:
```
....
String route = args[0]->operator String();
PackedByteArray tmpdata = args[1]->operator PackedByteArray();
Variant funcall = *args[2];

PackedByteArray tmpVar;
Variant result;
GDNativeCallError err;
std::array call_args = { &tmpVar };
funcall.call("call", (const Variant **)call_args.data(), 1, result, err);
```