pgsql: Remove unneeded volatile qualifiers from postmaster.c.

Remove unneeded volatile qualifiers from postmaster.c.

Several flags were marked volatile and in some cases used sig_atomic_t
because they were accessed from signal handlers.  After commit 7389aad6,
we can just use unqualified bool.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CA%2BhUKGLMoeZNZY6gYdLUQmuoW_a8bKyLvtuZkd_zHcGVOfDzBA%40mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/8d2c1913ed3df9384973399deeb75fc1e55943fe

Modified Files
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src/backend/postmaster/postmaster.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)