sync.Once.done (field)

4 uses

	sync (current package)
		once.go#L20: 	done uint32
		once.go#L57: 	if atomic.LoadUint32(&o.done) == 0 {
		once.go#L66: 	if o.done == 0 {
		once.go#L67: 		defer atomic.StoreUint32(&o.done, 1)