testsuite: Fix up preprocessor conditions in bitint-31.c test
Andre reported on IRC that this test has weird preprocessor conditions,
obviously the intent was to test whether corresponding __*_MANT_DIG__
is equal to the expected value like earlier in the function definitions,
but somehow I've ended up with a comma expression instead, which was
always true.
2024-01-12 Jakub Jelinek <jakub@redhat.com>
* gcc.dg/bitint-31.c: Fix up #if conditions checking whether
__*_MANT_DIG__ is equal to a particular precision.