sync.Once.done (field)

4 uses

	sync (current package)
		once.go#L28: 	done atomic.Uint32
		once.go#L67: 	if o.done.Load() == 0 {
		once.go#L76: 	if o.done.Load() == 0 {
		once.go#L77: 		defer o.done.Store(1)