pgsql: pg_resetwal: Corrections around -c option

pg_resetwal: Corrections around -c option

The present pg_resetwal code hardcodes the minimum value for -c as 2,
which is FrozenTransactionId, but it's not clear why that is allowed.
After some research, it was probably a mistake in the original patch.
Change it to FirstNormalTransactionId, which matches other xid-related
options in pg_resetwal.

Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://www.postgresql.org/message-id/flat/d09f0e91-8757-642b-1a92-da9a52f5589a%40eisentraut.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/e3679bc1c31add8fa29a9dedd10fe6c563efde79

Modified Files
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src/bin/pg_resetwal/pg_resetwal.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)