In these two cases the return value was assigned to a variable but
never used. This commit adds a check for the return value.
ok = gtk_tree_model_get_iter (model, &iter, (GtkTreePath*) rows->data);
ok = gtk_tree_model_get_iter (model, &iter, (GtkTreePath*) rows->data);
gtk_tree_model_get (model, &iter, 0, &var, -1);
gtk_tree_model_get (model, &iter, 0, &var, -1);
gtk_widget_set_sensitive (rd->new_label_entry, TRUE);
ok = gtk_tree_model_get_iter (model, &iter, (GtkTreePath*) rows->data);
gtk_widget_set_sensitive (rd->new_label_entry, TRUE);
ok = gtk_tree_model_get_iter (model, &iter, (GtkTreePath*) rows->data);
gtk_tree_model_get (model, &iter,
0, &var,
gtk_tree_model_get (model, &iter,
0, &var,