Merge #10029: Fix parameter naming inconsistencies between .h and .cpp files

Summary:
97b8213 Fix parameter naming inconsistencies between .h and .cpp files (practicalswift)

Tree-SHA512: 4f46cc3973a898d2478bdb1b8c8d1829c3a7298b63bc47359c5dc2f135466773072d9672134ef3e7557dfc913720e49b675176b9e435b8bd1992af9ad53866e4

Backport of Core PR 10029
https://github.com/bitcoin/bitcoin/pull/10029/files

Test Plan: ninja check

Reviewers: deadalnix, Fabien, markblundeberg, #bitcoin_abc

Reviewed By: markblundeberg, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D2940