PVS-Studio warning V614 for MPC-HC

void CSyncAP::RenderThread()
{
  ....
  REFERENCE_TIME rtRefClockTimeNow;
  if (m_pRefClock) {
    m_pRefClock->GetTime(&rtRefClockTimeNow);
  }
  LONG lLastVsyncTime =
    (LONG)((m_llEstVBlankTime - rtRefClockTimeNow) / 10000);
  ....
}

This suspicious code was found in MPC-HC project by PVS-Studio static code analyzer.
Warning message is:
V614 Potentially uninitialized variable 'rtRefClockTimeNow' used. syncrenderer.cpp 3604

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/