if (!cacheLock) nss_InitLock(&cacheLock, nssILockCache);
ssl_InitClientSessionCacheLock();
lock_cache(void){    /* XXX Since the client session cache has no init function, we must     * XXX init the cacheLock on the first call.  Fix in NSS 3.0.     */    if (!cacheLock)	nss_InitLock(&cacheLock, nssILockCache);    PZ_Lock(cacheLock);}