1.修复读取ts中aac格式数据多次flush问题

2.修复subscribe结束时判断IsClosed调用对象错误
3.增加DefaultYaml功能

subscriber.go

@@ -348,11 +348,10 @@ func (s *Subscriber) PlayBlock(subType byte) {
 			time.Sleep(time.Second)
 		}
 	}
-	println("exit")
 }
 
 func (s *Subscriber) onStop() {
-	if !s.IsClosed() {
+	if !s.Stream.IsClosed() {
 		s.Info("stop")
 		if !s.IsInternal {
 			s.Stream.Receive(s.Spesific)