message: Use ticks from libfranka.
diff: @@ -173,10 +173,8 @@ void FrankaHW::control(
  uint32_t last_sequence_number = robot_state_.sequence_number;
  run_function_([this, ros_callback, &last_sequence_number]() {
  if (last_sequence_number != robot_state_.sequence_number) {
  - // TODO (fwalch): Handle overflows.
  - int ticks = robot_state_.sequence_number - last_sequence_number;
  last_sequence_number = robot_state_.sequence_number;
  - ros::Duration period(ticks * kPeriod);
  + ros::Duration period(robot_state_.timeStep());
  return ros_callback(ros::Time::now(), period);
  }
  return true;
  