pthread_spin_destroy
int pthread_spin_destroy(pthread_spinlock_t *);
PROTO_STD_DEPRECATED(pthread_spin_destroy);
CHECKr(pthread_spin_destroy(&l));
#define lock_quick_destroy(lock) LOCKRET(pthread_spin_destroy(lock))
LOCKRET(pthread_spin_destroy(&e->u.spinlock));
#define lock_quick_destroy(lock) LOCKRET(pthread_spin_destroy(lock))