PVS-Studio warning V523 for ACE

ACE_Throughput_Stats::sample (ACE_UINT64 throughput,
                              ACE_UINT64 latency)
{
  this->ACE_Basic_Stats::sample (latency);

  if (this->samples_count () == 1u)
    {
      this->throughput_last_   = throughput;
    }
  else
    {
      this->throughput_last_ = throughput;
    }
}

This suspicious code was found in ACE project by PVS-Studio static code analyzer.
Warning message is:
V523 The 'then' statement is equivalent to the 'else' statement. ACE throughput_stats.cpp 31

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/