Thread: pgsql: Fix C99isms introduced when backpatching atomics / spinlock test

Fix C99isms introduced when backpatching atomics / spinlock tests.

Branch
------
REL9_5_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/f7aefd5158ffea5f5c7b2828658287719d5163d3

Modified Files
--------------
src/test/regress/regress.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)