message: Add current state to advance log
diff: @@ -117,7 +117,7 @@ namespace ccf
  void advance(T s)
  {
  - LOG_DEBUG_FMT("Advancing to state {} (from {})", this->s.load());
  + LOG_DEBUG_FMT("Advancing to state {} (from {})", s, this->s.load());
  this->s.store(s);
  }
  };
  