PVS-Studio warning V595 for Virtualdub

void VDTContextD3D9::Shutdown() {
  ....
  mpData->mFenceManager.Shutdown();
  ....
  if (mpData) {
    if (mpData->mhmodD3D9)
      FreeLibrary(mpData->mhmodD3D9);
  ....
}

This suspicious code was found in Virtualdub project by PVS-Studio static code analyzer.
Warning message is:
V595 The 'mpData' pointer was utilized before it was verified against nullptr. Check lines: 1422, 1429. Tessa context_d3d9.cpp 1422

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/