kg_save_cred_id
if (!kg_save_cred_id((gss_cred_id_t) deleg_cred)) {
if (! kg_save_cred_id((gss_cred_id_t) cred)) {
if (! kg_save_cred_id((gss_cred_id_t)cred)) {
if (! kg_save_cred_id((gss_cred_id_t) new_cred)) {