all() method doesn't consider registered scribes

[NeverWise]

In ChainingParser class the first() method works as expected but the all() method doesn't works.
I think the problem is that the all() method lacks of an if that is present in the first() method.
To be clear this if:

if (index != null) {
	reader.setScribeIndex(index);
}

[mangstadt]

Thanks for catching that. Fixed in 254fcec.