HAMMER2_CHECK_NULL
keynull = HAMMER2_CHECK_NULL;
keynull &= ~HAMMER2_CHECK_NULL;
if (flags & HAMMER2_CHECK_NULL) {
if (flags & HAMMER2_CHECK_NULL) {
keynull = HAMMER2_CHECK_NULL;
keynull &= ~HAMMER2_CHECK_NULL;
if (flags & HAMMER2_CHECK_NULL) {
if (flags & HAMMER2_CHECK_NULL) {