[libgda] GdaprovDataModelLdap: removed warnings

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit a4bcf933e20a6d43051847a0fb46503f8f580e9c
Author: Daniel Espinosa <esodan gmail com>
Date:   Fri Apr 5 10:49:47 2019 -0600

    GdaprovDataModelLdap: removed warnings

 providers/ldap/gdaprov-data-model-ldap.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/providers/ldap/gdaprov-data-model-ldap.c b/providers/ldap/gdaprov-data-model-ldap.c
index c686853bd..8b879adf1 100644
--- a/providers/ldap/gdaprov-data-model-ldap.c
+++ b/providers/ldap/gdaprov-data-model-ldap.c
@@ -299,8 +299,7 @@ gda_data_model_ldap_dispose (GObject *object)
                if (model->priv->row_mult)
                        row_multiplier_free (model->priv->row_mult);
                if (model->priv->columns) {
-                        g_list_foreach (model->priv->columns, (GFunc) g_object_unref, NULL);
-                        g_list_free (model->priv->columns);
+                        g_list_free_full (model->priv->columns, (GDestroyNotify) g_object_unref);
                         model->priv->columns = NULL;
                 }
                if (model->priv->attributes) {
@@ -424,8 +423,7 @@ gda_data_model_ldap_set_property (GObject *object,
                        csv = g_value_get_string (value);
                        if (csv && *csv) {
                                if (model->priv->columns) {
-                                       g_list_foreach (model->priv->columns, (GFunc) g_object_unref, NULL);
-                                       g_list_free (model->priv->columns);
+                                       g_list_free_full (model->priv->columns, (GDestroyNotify) 
g_object_unref);
                                }
                                if (model->priv->column_mv_actions) {
                                        g_array_free (model->priv->column_mv_actions, TRUE);