pthread_key_delete
#define HEIMDAL_key_delete(k) pthread_key_delete(k)
|| &pthread_key_delete == 0
pthread_key_delete(key);
if (pthread_key_delete(*key) != 0)
int pthread_key_delete(pthread_key_t);
STUB_FUNC1(pthread_key_delete, PJT_KEY_DELETE, int, pthread_key_t)
(void)pthread_key_delete(key);
__weak_reference(_thr_key_delete, pthread_key_delete);