dt_ident_unref
extern int dt_ident_unref(const dt_ident_t *);
if ((idflags & DT_IDFLG_REF) && dt_ident_unref(idp)) {
if (cp->dn_kind == DT_NODE_VAR && dt_ident_unref(cp->dn_ident)) {
if (idp == NULL || dt_ident_unref(idp))
} else if (!dt_ident_unref(lp->dn_ident)) {
dt_ident_unref(lp->dn_ident)) {
if (idp->di_kind == DT_IDENT_SCALAR && dt_ident_unref(idp) &&