pgsql: Fix fallback implementation for pg_atomic_test_set_flag().

Fix fallback implementation for pg_atomic_test_set_flag().

The fallback implementation of pg_atomic_test_set_flag() that uses
atomic-exchange gives pg_atomic_exchange_u32_impl() an extra
argument.  This issue has been present since the introduction of
the atomics API in commit b64d92f1a5.

Reviewed-by: Andres Freund
Discussion: https://postgr.es/m/20231114035439.GA1809032%40nathanxps13
Backpatch-through: 12

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/69c32b8b3535f7f367cca90a09d9557d575b270c

Modified Files
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src/include/port/atomics/generic.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)