lomac_to_string
static int lomac_to_string(struct sbuf *sb, struct mac_lomac *ml);
lomac_to_string(&subjlabel_sb, subjlabel);
lomac_to_string(&subjtext_sb, &subj->mac_lomac);
lomac_to_string(&objlabel_sb, objlabel);
return (lomac_to_string(sb, ml));