message: Allow packets with retry tokens if retry token secret is not present
  Summary: Remove the CHECK call if retry token secret isn't there
diff: @@ -841,8 +841,14 @@ bool QuicServerWorker::validateRetryToken(
  std::string& encryptedToken,
  const ConnectionId& dstConnId,
  const folly::IPAddress& clientIp) {
  + // If for some reason there is a retry token, but no retry token
  + // secret, then just allow the packet
  + if (!transportSettings_.retryTokenSecret.hasValue()) {
  + VLOG(4) << "Received a retry token, but there is no retry token secret";
  + return true;
  + }
  +
  // Try to decode the token
  - CHECK(transportSettings_.retryTokenSecret.has_value());
  RetryTokenGenerator generator(transportSettings_.retryTokenSecret.value());
  auto buf = folly::IOBuf::copyBuffer(encryptedToken);
  