Обсуждение: pgsql: Fix comment related to pg_cryptohash_error()

Fix comment related to pg_cryptohash_error()

One of the comments introduced in b69aba7 was worded a bit weirdly, so
improve it.

Reported-by: Sergey Shinderuk
Discussion: https://postgr.es/m/71b9a5d2-a3bf-83bc-a243-93dcf0bcfb3b@postgrespro.ru
Backpatch-through: 14

Branch
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REL_14_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/af8d530e47588d909a3c8d400b21a273e50498d6

Modified Files
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src/common/cryptohash.c         | 2 +-
src/common/cryptohash_openssl.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)