message: Use larger type for size.
  Summary: This may be causing issues when we get near capacity.
diff: @@ -181,7 +181,7 @@ struct RequestGroup {
  ConnectionId scid;
  folly::SocketAddress clientAddress;
  const CipherPair* cipherPair{nullptr};
  - SmallVec<PacketizationRequest, 64, uint8_t> requests;
  + SmallVec<PacketizationRequest, 64, uint32_t> requests;
  };
  size_t writePacketsGroup(
  