Fixed #21280 -- Don't generate empty migration files

                        open(init_path, "w").close()

                    # We just do this once per app

                    directory_created[app_label] = True

                migration_string = writer.as_string()

                with open(writer.path, "wb") as fh:

                    fh.write(writer.as_string())

                    fh.write(migration_string)