message: Removed some releaseDataFlag which caused RegularizedConjugateGradientConeBeamReconstructionFilter
  to update the rtkConjugateGradientImageFilter twice
diff: @@ -197,7 +197,7 @@ RegularizedConjugateGradientConeBeamReconstructionFilter<TImage>
  // Plug the positivity filter if requested
  if (m_PerformPositivity)
  {
  - m_PositivityFilter->SetInPlace(true);
  + m_PositivityFilter->SetInPlace(false);
  m_PositivityFilter->SetOutsideValue(0.0);
  m_PositivityFilter->ThresholdBelow(0.0);
  @@ -220,8 +220,6 @@ RegularizedConjugateGradientConeBeamReconstructionFilter<TImage>
  if (m_PerformWaveletsSpatialDenoising)
  {
  - currentDownstreamFilter->ReleaseDataFlagOn();
  -
  m_WaveletsDenoising->SetInput(currentDownstreamFilter->GetOutput());
  m_WaveletsDenoising->SetOrder(m_Order);
  m_WaveletsDenoising->SetThreshold(m_SoftThresholdWavelets);
  