fixing deadlock

broadcast/broadcast.go

@@ -232,6 +232,7 @@ func GetContainerNetworks(containers []string) map[string]string {
 // update broadcastState with a map of items
 func UpdateBroadcastState(values map[string]interface{}) error {
 	mu.Lock()
+	defer mu.Unlock()
 	v := reflect.ValueOf(&broadcastState).Elem()
 	for key, value := range values {
 		field := v.FieldByName(key)