Обсуждение: pgsql: Don't try to translate NULL in GetConfigOptionByNum().

Don't try to translate NULL in GetConfigOptionByNum().

Noticed via -fsanitize=undefined. Introduced when a few columns in
GetConfigOptionByNum() / pg_settings started to be translated in 72be8c29a /
PG 12.

Backpatch to all affected branches, for the same reasons as 46ab07ffda9.

Discussion: https://postgr.es/m/20220323173537.ll7klrglnp4gn2um@alap3.anarazel.de
Backpatch: 12-

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/3ac7d024122f26d828907f15d088dcd67d2eb4f1

Modified Files
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src/backend/utils/misc/guc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)