PVS-Studio warning V517 for Geant4

G4VSolid* G4tgbVolume::FindOrConstructG4Solid(
  const G4tgrSolid* sol )
{
  ....
  if( solParam[jj+11] == 0 )
  {
    vertexType = ABSOLUTE;
  }
  else if( solParam[jj+11] == 0 )
  {
    vertexType = RELATIVE;
  }
  else
  ....
}

This suspicious code was found in Geant4 project by PVS-Studio static code analyzer.
Warning message is:
V517 The use of 'if (A) {...} else if (A) {...}' pattern was detected. There is a probability of logical error presence. Check lines: 680, 684. G4geomtext g4tgbvolume.cc 680

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