PL_HashTableEnumerateEntries(crlcache.issuers, &FreeIssuer, NULL);
PL_HashTableEnumerateEntries(crlcache.issuers, &FreeIssuer, &rv);
SECStatus ShutdownCRLCache(void){    if (!crlcache.lock || !crlcache.issuers)    {        return SECFailure;    }    /* empty the cache */    PL_HashTableEnumerateEntries(crlcache.issuers, &FreeIssuer, NULL);    PL_HashTableDestroy(crlcache.issuers);    crlcache.issuers = NULL;    PR_DestroyLock(crlcache.lock);    crlcache.lock = NULL;    crlcache_initialized = PR_FALSE;    return SECSuccess;}