PK11_USE_THREADS(PZ_DestroyLock((PZLock *)(list->lock));)
pk11_freeSlotList(PK11SlotList *list){    PK11SlotListElement *le, *next ;    if (list == NULL) return;    for (le = list->head ; le; le = next) {	next = le->next;	pk11_FreeListElement(list,le);    }    PK11_USE_THREADS(PZ_DestroyLock((PZLock *)(list->lock));)    list->lock = NULL;    list->head = NULL;}