PVS-Studio warning V549 for Open Metronome

CMetBlinker::CMetBlinker(....)
{
  ...
  _swab((char*)&*m_aaActualBitmapBits[i].begin(),
        (char*)&*m_aaActualBitmapBits[i].begin(),
        NumberOfPixels/8);
  ...
}

This suspicious code was found in Open Metronome project by PVS-Studio static code analyzer.
Warning message is:
V549 The first argument of '_swab' function matches it's the second argument. metronome metblinker.cpp 117

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/