cosmetic for .ggo

[clitk.git] / tools / clitkImageGradientMagnitudeGenericFilter.txx

diff --git a/tools/clitkImageGradientMagnitudeGenericFilter.txx b/tools/clitkImageGradientMagnitudeGenericFilter.txx
index 1df5601732e76c5fd40683697039f841468edb33..7aecf99025de8963c95ffbedae28c342f999becd 100644 (file)
--- a/tools/clitkImageGradientMagnitudeGenericFilter.txx
+++ b/tools/clitkImageGradientMagnitudeGenericFilter.txx
@@ -102,7 +102,7 @@ namespace clitk
         // Reading input
         typename InputImageType::Pointer input = this->template GetInput<InputImageType>(0);
 
-        typename MaskImageType::Pointer mask = NULL;
+        typename MaskImageType::Pointer mask = ITK_NULLPTR;
         if(mArgsInfo.mask_given) {
             mask = this->template GetInput<MaskImageType>(1);
         }