add: if (server == NULL) { Ns_Log(Error, "%s: attempt to load outside a virual server", module); return NS_ERROR; }
context: Ns_ModuleInit(char *server, char *module){    static int once;    if (!once) {	NsDbInitPools();	once = 1;    }    NsDbInitServer(server);    return Ns_TclInitInterps(server, NsDbAddCmds, server);}