sync.Once.done (field)

4 uses

	sync (current package)
		once.go#L24: 	done uint32
		once.go#L63: 	if atomic.LoadUint32(&o.done) == 0 {
		once.go#L72: 	if o.done == 0 {
		once.go#L73: 		defer atomic.StoreUint32(&o.done, 1)