PVS-Studio warning V501 for InstantVNC

bool CPicture::Draw(....)
{
  ...
  if (fHorzSize < 0 || fHorzSize < 0 ) {
    return false;
  }
  ...
}

This suspicious code was found in InstantVNC 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: fHorzSize < 0 || fHorzSize < 0 PicLibAPI picture.cpp 347

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/