mapping data to etcd

vendor/k8s.io/apimachinery/pkg/watch/mux.go

@@ -204,11 +204,7 @@ func (m *Broadcaster) Shutdown() {
 func (m *Broadcaster) loop() {
 	// Deliberately not catching crashes here. Yes, bring down the process if there's a
 	// bug in watch.Broadcaster.
-	for {
-		event, ok := <-m.incoming
-		if !ok {
-			break
-		}
+	for event := range m.incoming {
 		if event.Type == internalRunFunctionMarker {
 			event.Object.(functionFakeRuntimeObject)()
 			continue