PVS-Studio warning V501 for libjingle

bool ParseGingleTransportInfos(....)
{
  ...
  bool has_audio =
    FindContentInfoByName(contents, CN_AUDIO) != NULL;
  bool has_video =
    FindContentInfoByName(contents, CN_VIDEO) != NULL;

  if (!has_audio && !has_audio) {
    ...
}

This is what should have been written here: if (!has_audio && !has_video) {

This suspicious code was found in libjingle project by PVS-Studio static code analyzer.
Warning message is:
V501 There are identical sub-expressions to the left and to the right of the '&&' operator: !has_audio &&!has_audio libjingle_p2p sessionmessages.cc 308

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/