1f01fe0257 bitcoin-tx: Use constant for n pubkeys check (Antoine Le Calvez)
Pull request description:
Use the constant for the maximum number of public keys in a multisig script defined in script/script.h instead of hardcoding it.
Tree-SHA512: 83e6c46df907944d0d993159955e402784415536d61fdb5a5becba2b042e37ad2a291b27301c1b169416cb71c823a571d82257512cd4a64848a27a24c875fcc6
Backport of Core PR14474
https://github.com/bitcoin/bitcoin/pull/14474/