ossl_provider_get_parent
parent_handle = ossl_provider_get_parent(prov);
parent_handle = ossl_provider_get_parent(prov);
return gbl->c_prov_free(ossl_provider_get_parent(prov), deactivate);
const OSSL_CORE_HANDLE *ossl_provider_get_parent(OSSL_PROVIDER *prov);