PVS-Studio warning V519 for Geant4

void G4IonisParamMat::ComputeDensityEffect()
{
  ....
  fX0density = 0.326*fCdensity-2.5 ;
  fX1density = 5.0 ;
  fMdensity = 3. ;
  while((icase > 0)&&(fCdensity < ClimiG[icase])) icase-- ;
  fX0density = X0valG[icase];
  fX1density = X1valG[icase];
  ....
}

This suspicious code was found in Geant4 project by PVS-Studio static code analyzer.
Warning message is:
V519 The 'fX0density' variable is assigned values twice successively. Perhaps this is a mistake. Check lines: 245, 247. g4ionisparammat.cc 247

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/