PVS-Studio warning V501 for Geant4

G4VParticleChange* G4ForwardXrayTR::PostStepDoIt(
  const G4Track& aTrack, const G4Step& aStep)
{
  ....
  if (     iMat == jMat
      || (    (fMatIndex1 >= 0 && fMatIndex1 >= 0)
           && ( iMat != fMatIndex1 && iMat != fMatIndex2 )
           && ( jMat != fMatIndex1 && jMat != fMatIndex2 )  )
  ....
}

Most likely this is what should be written here: (fMatIndex1 >= 0 && fMatIndex2 >= 0)

This suspicious code was found in Geant4 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: fMatIndex1 >= 0 && fMatIndex1 >= 0 G4xrays g4forwardxraytr.cc 620

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/