Fix C99isms introduced when backpatching atomics / spinlock tests.
Branch------REL_10_STABLE
Details-------https://git.postgresql.org/pg/commitdiff/5e4beae86d2684eb2f80cbda881eea5351b004ee
Modified Files--------------src/test/regress/regress.c | 13 ++++++++-----1 file changed, 8 insertions(+), 5 deletions(-)
