Thread: pgsql: Use PqMsg_* macros in postgres.c.

Use PqMsg_* macros in postgres.c.

Commit f4b54e1ed9, which introduced macros for protocol characters,
missed updating a couple of places in postgres.c.

Author: Dave Cramer
Reviewed-by: Fabrízio de Royes Mello
Discussion: https://postgr.es/m/CADK3HHJUVBPoVOmFesPB-fN8_dYt%2BQELV2UB6jxOW2Z40qF-qw%40mail.gmail.com
Backpatch-through: 17

Branch
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REL_17_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/e43537cdc36146f1becc0084b1acc24a46074ae6

Modified Files
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src/backend/tcop/postgres.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)