freetree234(sktree); sktree = NULL;
void sk_cleanup(void){    Actual_Socket s;    int i;    if (sktree) {	for (i = 0; (s = index234(sktree, i)) != NULL; i++) {	    p_closesocket(s->s);	}    }    p_WSACleanup();    if (winsock_module)	FreeLibrary(winsock_module);}