Fixed confirmation window closing

source/ubl-settings-usergroups-system.c

@@ -14,6 +14,7 @@ void on_delete_system_user(GtkWidget *, yon_confirmation_window *dialog){
     if (!yon_char_is_empty(command)){
         yon_launch(command);
     }
+    on_subwindow_close(dialog->Window);
 }
 
 void on_delete_system_group(GtkWidget *, yon_confirmation_window *dialog){
@@ -30,6 +31,7 @@ void on_delete_system_group(GtkWidget *, yon_confirmation_window *dialog){
     if (!yon_char_is_empty(command)){
         yon_launch(command);
     }
+    on_subwindow_close(dialog->Window);
 }
 
 void yon_remove_confirmation_window_accept_clicked(GtkWidget *self,dictionary *dict){