message: Pack holes in D6DState
  Summary: As in title.
diff: @@ -794,6 +794,12 @@ struct QuicConnectionStateBase : public folly::DelayedDestruction {
  // The lastest d6d probe packet transmitted
  folly::Optional<D6DProbePacket> lastProbe;
  + // The raise timeout
  + std::chrono::seconds raiseTimeout{kDefaultD6DRaiseTimeout};
  +
  + // The probe timeout
  + std::chrono::seconds probeTimeout{kDefaultD6DProbeTimeout};
  +
  // The number of outstanding probe packets
  uint64_t outstandingProbes{0};
  @@ -806,15 +812,6 @@ struct QuicConnectionStateBase : public folly::DelayedDestruction {
  // Current probe size, dynamically adjusted by the probing algorithm
  uint32_t currentProbeSize{kDefaultD6DBasePMTU};
  - // The raise timeout
  - std::chrono::seconds raiseTimeout{kDefaultD6DRaiseTimeout};
  -
  - // The probe timeout
  - std::chrono::seconds probeTimeout{kDefaultD6DProbeTimeout};
  -
  - // D6D Machine State
  - D6DMachineState state{D6DMachineState::DISABLED};
  -
  // Probe size raiser
  std::unique_ptr<ProbeSizeRaiser> raiser;
  @@ -824,6 +821,9 @@ struct QuicConnectionStateBase : public folly::DelayedDestruction {
  // Meta state
  D6DMetaState meta;
  +
  + // D6D Machine State
  + D6DMachineState state{D6DMachineState::DISABLED};
  };
  D6DState d6d;
  