PVS-Studio warning V501 for OpenCV

CV_IMPL void cvComposeRT(
  const CvMat* _rvec1, const CvMat* _tvec1,
  const CvMat* _rvec2, const CvMat* _tvec2,
  CvMat* _rvec3, CvMat* _tvec3,
  CvMat* dr3dr1, CvMat* dr3dt1,
  CvMat* dr3dr2, CvMat* dr3dt2,
  CvMat* dt3dr1, CvMat* dt3dt1,
  CvMat* dt3dr2, CvMat* dt3dt2)
{
  ....
  if( _rvec3 || dr3dr1 || dr3dr1 )
  ....
}

This suspicious code was found in OpenCV 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: _rvec3 || dr3dr1 || dr3dr1 calibration.cpp 415

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