PVS-Studio warning V517 for ITK

void DiffusionTensor3DReconstructionImageFilter<....>
::PrintSelf(std::ostream & os, Indent indent) const
{
  ....
  if ( this->m_GradientImageTypeEnumeration ==
       GradientIsInManyImages )
  {
    os << indent
       << "Gradient images haven been supplied "
       << std::endl;
  }
  else if ( this->m_GradientImageTypeEnumeration ==
             GradientIsInManyImages )
  {
    os << indent
       << "A multicomponent gradient image has been supplied"
       << std::endl;
  }
  ....
}

This suspicious code was found in ITK 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: 654, 658. itkdiffusiontensor3dreconstructionimagefilter.hxx 654

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