fix flow report hook player or pusher judge error

srt/SrtTransportImp.cpp

@@ -17,7 +17,7 @@ SrtTransportImp::~SrtTransportImp() {
     GET_CONFIG(uint32_t, iFlowThreshold, General::kFlowThreshold);
     if (_total_bytes >= iFlowThreshold * 1024) {
         NoticeCenter::Instance().emitEvent(
-            Broadcast::kBroadcastFlowReport, _media_info, _total_bytes, duration, false,
+            Broadcast::kBroadcastFlowReport, _media_info, _total_bytes, duration, !_is_pusher,
             static_cast<SockInfo &>(*this));
     }
 }