message: fixed misaligned #ifdef
diff: @@ -1902,6 +1902,7 @@ bool SharedGroup::do_begin_write(bool must_wait)
  // In doing so, we may bypass other waiters, hence the condition for yielding
  // should take this situation into account by comparing with '>' instead of '!='
  info->next_served = my_ticket;
  +#endif
  }
  else { // non-blocking
  // In the non-blocking case, we will only succeed if there is no contention for
  @@ -1910,7 +1911,6 @@ bool SharedGroup::do_begin_write(bool must_wait)
  bool got_the_lock = m_writemutex.try_lock();
  if (!got_the_lock) return false;
  }
  -#endif
  if (info->commit_in_critical_phase) {
  m_writemutex.unlock();
  