Stop using rtc::TaskQueue::Current in RtcpTransceiver

Bug: webrtc:10191
Change-Id: Ifc080021ebcb203ea72beba8846e940a0c382dd1
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/126120
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27015}
diff --git a/modules/rtp_rtcp/source/rtcp_transceiver.cc b/modules/rtp_rtcp/source/rtcp_transceiver.cc
index cec6da9..cca3205 100644
--- a/modules/rtp_rtcp/source/rtcp_transceiver.cc
+++ b/modules/rtp_rtcp/source/rtcp_transceiver.cc
@@ -22,7 +22,10 @@
 namespace webrtc {
 namespace {
 struct Destructor {
-  void operator()() { rtcp_transceiver = nullptr; }
+  void operator()() {
+    rtcp_transceiver->StopPeriodicTask();
+    rtcp_transceiver = nullptr;
+  }
   std::unique_ptr<RtcpTransceiverImpl> rtcp_transceiver;
 };
 }  // namespace