Обсуждение: pgsql: Fix pgbench in prepared mode with an empty pipeline

Fix pgbench in prepared mode with an empty pipeline

It crashes because it references memory that's not allocated in that
particular case.  Fix by allocating it.

Reported-by: Alexander Lakhin <exclusion@gmail.com>
Discussion: https://postgr.es/m/bcf802a6-afc1-95b9-7bf4-c5dd868ec144@gmail.com

Branch
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REL_15_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/34f51196573ca19d83707d30b218c65b46f42d77

Modified Files
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src/bin/pgbench/pgbench.c                    | 44 ++++++++++++++++------------
src/bin/pgbench/t/001_pgbench_with_server.pl |  2 ++
2 files changed, 28 insertions(+), 18 deletions(-)