pgsql: Harmonize pg_bsd_indent parameter names.

Harmonize pg_bsd_indent parameter names.

Make sure that function declarations use names that exactly match the
corresponding names from function definitions in pg_bsd_indent.

This commit was written with help from clang-tidy, by mechanically
applying the same rules as similar clean-up commits.

Discussion: /messages/by-id/CAH2-WzkaBS8w-vCbG5M5Bx7XikC0WhNLJV_+Z_YAWW9Kef6OBQ@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/99b99285e5438ee8b0c065db58e87e6577158d22

Modified Files
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src/tools/pg_bsd_indent/args.c | 2 +-
src/tools/pg_bsd_indent/indent.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)