pg_combinebackup: Error message improvements

Peter Eisentraut <peter@eisentraut.org>

Commit: c5c82123d3050c3a5eef0f51e9783f1cc5004ba0
Author: Peter Eisentraut <peter@eisentraut.org>
Date: 2024-06-21T07:40:44Z
Releases: 17.0
pg_combinebackup: Error message improvements

Make the wordings of some file-related error messages more like those
used in other files.

Files