修复hls无人观看事件不触发的bug

src/Record/HlsMediaSource.h

@@ -50,6 +50,7 @@ public:
         if(!_registed){
         if(!_registed){
             regist();
             regist();
             _registed = true;
             _registed = true;
+            onNoneReader();
         }
         }
     }
     }