Ensure closing an open channel via select is feasible?

select_close.go

// Being Stop called several times
// Besides the race condition btw channel read & close
// Given that select is non-deterministic
// Would this work without panicking?

func Stop() {
	select {
	case _, open := <-sender.stopChannel:
		if open {
			close(sender.stopChannel)
		}
	default:
		close(sender.stopChannel)
	}
}