PVS-Studio warning V501 for Virtualdub

void AVIOutputFile::finalize() {
  ....
  if (stream.mChunkCount && hdr.dwScale && stream.mChunkCount)
  ....
}

This suspicious code was found in Virtualdub project by PVS-Studio static code analyzer.
Warning message is:
V501 There are identical sub-expressions 'stream.mChunkCount' to the left and to the right of the '&&' operator. VirtualDub avioutputfile.cpp 761

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/