Harmonize function parameter names for Postgres 19.

Peter Geoghegan <pg@bowt.ie>

Commit: d14f69a32a17924d93838491bc8e78a1a9b46807
Author: Peter Geoghegan <pg@bowt.ie>
Date: 2026-04-22T16:47:19Z
Harmonize function parameter names for Postgres 19.

Make sure that function declarations use names that exactly match the
corresponding names from function definitions in a few places.  Most of
these inconsistencies were introduced during Postgres 19 development.

This commit was written with help from clang-tidy, by mechanically
applying the same rules as similar clean-up commits (the earliest such
commit was commit 035ce1fe).

Files