message: Change the retransmission data handling precondition from DCHECK to CHECK
  Summary: to get prod signals
diff: @@ -122,7 +122,7 @@ void handleRetransmissionWritten(
  stream.lossBuffer.begin(),
  stream.lossBuffer.end(),
  [&](const auto& buffer) { return frameOffset == buffer.offset; });
  - DCHECK(lossBufferIter != stream.lossBuffer.end());
  + CHECK(lossBufferIter != stream.lossBuffer.end());
  VLOG(10) << nodeToString(conn.nodeType) << " sent retransmission"
  << " packetNum=" << packetNum << " " << conn;
  auto bufferLen = lossBufferIter->data.chainLength();
  