pgsql: pgbench: Fix handling of socket errors during benchmark.

pgbench: Fix handling of socket errors during benchmark.

Previously socket errors such as invalid socket or socket wait method failures
during benchmark caused pgbench to exit with status 0. Instead, errors during
the run should result in exit status 2.

Back-patch to v12 where pgbench started reporting exit status.

Original complaint and patch by Hayato Kuroda.

Author: Yugo Nagata, Fabien COELHO
Reviewed-by: Kyotaro Horiguchi, Fujii Masao
Discussion: https://postgr.es/m/TYCPR01MB5870057375ACA8A73099C649F5349@TYCPR01MB5870.jpnprd01.prod.outlook.com

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/c5f7e702d78f5b49a80b6e8b69e2b4019c1fca4b

Modified Files
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src/bin/pgbench/pgbench.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)