pgsql: Clarify logic in CreateSubscription().

From: Jeff Davis <jdavis(at)postgresql(dot)org>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Clarify logic in CreateSubscription().
Date: 2026-08-15 16:54:36
Message-ID: E1wvHeV-00000000hCK-2q1v@gemulon.postgresql.org
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Clarify logic in CreateSubscription().

No bug found in previous code, but it unnecessarily relied on grammar
rules. Per complaint from Coverity.

Reported-by: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Discussion: https://postgr.es/m/1787286.1786328153@sss.pgh.pa.us
Backpatch-through: 19

Branch
------
REL_19_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/7b846015a40df872db572d92476d1e7c4e0c0066

Modified Files
--------------
src/backend/commands/subscriptioncmds.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

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