doc: warn that CheckBlock() underestimates sigops
Counting sigops in the witness requires context that CheckBlock()
does not have, so it only counts sigops for non-segwit transactions.
It's useful to document, but it should not be a problem.
Counting sigops in the witness requires context that CheckBlock()
does not have, so it only counts sigops for non-segwit transactions.
It's useful to document, but it should not be a problem.