fixed the pointer to an pointer.

modules/saml/saml.go

@@ -60,7 +60,7 @@ func NewSAMLEndpoint(config *toml.Tree) (s *SAML, err error) {
 	log.Trace().Str("config", config.String()).Msg("config")
 	var key interface{}
 	s.config = config
-	if err = config.Unmarshal(&s); err != nil {
+	if err = config.Unmarshal(s); err != nil {
 		log.Error().Err(err).Msg("Error while mapping config to struct")
 		return
 	}