if(res != NULL) xmlUnlinkNode(res);
if(res != NULL) { xmlUnlinkNode(res);  }
delStatus(xmlNodePtr cib, const char *id, const char *instanceNum){    xmlNodePtr res = findStatus(cib, id, instanceNum);    if(res != NULL) xmlUnlinkNode(res);    //need to call?? xmlFreeNodeList(res);    FNRET(0);}