protoent_test_correctness
if (protoent_test_correctness(pe, NULL) == 0)
if (protoent_test_correctness(pe, NULL) != 0)
if (protoent_test_correctness(pe, NULL) != 0)
if ((protoent_test_correctness(pe, NULL) != 0) ||
return (protoent_test_correctness(pe, NULL));
static int protoent_test_correctness(struct protoent *, void *);