COMP: fixed compiler warning given by clang
COMP: fixed compiler warning given by clang

Change-Id: Ib303743a36760bd2e6bc869d23b0d5b80c4a1005

thewtex/ITK,fuentesdt/InsightToolkit-dev,stnava/ITK,richardbeare/ITK,LucHermitte/ITK,rhgong/itk-with-dom,zachary-williamson/ITK,blowekamp/ITK,atsnyder/ITK,atsnyder/ITK,BlueBrain/ITK,CapeDrew/DITK,LucasGandel/ITK,spinicist/ITK,blowekamp/ITK,CapeDrew/DITK,Kitware/ITK,LucHermitte/ITK,daviddoria/itkHoughTransform,cpatrick/ITK-RemoteIO,BlueBrain/ITK,InsightSoftwareConsortium/ITK,thewtex/ITK,malaterre/ITK,fbudin69500/ITK,blowekamp/ITK,atsnyder/ITK,jcfr/ITK,fedral/ITK,daviddoria/itkHoughTransform,CapeDrew/DCMTK-ITK,hjmjohnson/ITK,biotrump/ITK,heimdali/ITK,LucasGandel/ITK,eile/ITK,rhgong/itk-with-dom,hinerm/ITK,wkjeong/ITK,LucasGandel/ITK,hinerm/ITK,fuentesdt/InsightToolkit-dev,LucHermitte/ITK,InsightSoftwareConsortium/ITK,itkvideo/ITK,rhgong/itk-with-dom,spinicist/ITK,BRAINSia/ITK,thewtex/ITK,msmolens/ITK,itkvideo/ITK,vfonov/ITK,msmolens/ITK,InsightSoftwareConsortium/ITK,CapeDrew/DCMTK-ITK,hinerm/ITK,daviddoria/itkHoughTransform,heimdali/ITK,LucHermitte/ITK,hjmjohnson/ITK,paulnovo/ITK,BRAINSia/ITK,hendradarwin/ITK,BlueBrain/ITK,vfonov/ITK,wkjeong/ITK,hinerm/ITK,vfonov/ITK,hendradarwin/ITK,eile/ITK,GEHC-Surgery/ITK,itkvideo/ITK,rhgong/itk-with-dom,paulnovo/ITK,LucHermitte/ITK,PlutoniumHeart/ITK,LucHermitte/ITK,eile/ITK,hendradarwin/ITK,GEHC-Surgery/ITK,atsnyder/ITK,heimdali/ITK,daviddoria/itkHoughTransform,cpatrick/ITK-RemoteIO,heimdali/ITK,CapeDrew/DITK,itkvideo/ITK,jcfr/ITK,stnava/ITK,richardbeare/ITK,zachary-williamson/ITK,PlutoniumHeart/ITK,spinicist/ITK,hinerm/ITK,msmolens/ITK,atsnyder/ITK,malaterre/ITK,stnava/ITK,heimdali/ITK,biotrump/ITK,Kitware/ITK,InsightSoftwareConsortium/ITK,jcfr/ITK,CapeDrew/DCMTK-ITK,jmerkow/ITK,stnava/ITK,zachary-williamson/ITK,fuentesdt/InsightToolkit-dev,CapeDrew/DCMTK-ITK,malaterre/ITK,cpatrick/ITK-RemoteIO,hinerm/ITK,fedral/ITK,vfonov/ITK,cpatrick/ITK-RemoteIO,PlutoniumHeart/ITK,biotrump/ITK,rhgong/itk-with-dom,CapeDrew/DCMTK-ITK,daviddoria/itkHoughTransform,spinicist/ITK,blowekamp/ITK,fedral/ITK,BRAINSia/ITK,atsnyder/ITK,jcfr/ITK,richardbeare/ITK,msmolens/ITK,eile/ITK,eile/ITK,ajjl/ITK,msmolens/ITK,fedral/ITK,paulnovo/ITK,fbudin69500/ITK,BlueBrain/ITK,itkvideo/ITK,zachary-williamson/ITK,fbudin69500/ITK,rhgong/itk-with-dom,daviddoria/itkHoughTransform,BRAINSia/ITK,fbudin69500/ITK,fuentesdt/InsightToolkit-dev,zachary-williamson/ITK,LucasGandel/ITK,heimdali/ITK,msmolens/ITK,richardbeare/ITK,ajjl/ITK,BlueBrain/ITK,jmerkow/ITK,vfonov/ITK,jmerkow/ITK,Kitware/ITK,itkvideo/ITK,heimdali/ITK,malaterre/ITK,Kitware/ITK,GEHC-Surgery/ITK,spinicist/ITK,rhgong/itk-with-dom,jcfr/ITK,fedral/ITK,LucasGandel/ITK,paulnovo/ITK,eile/ITK,fedral/ITK,CapeDrew/DCMTK-ITK,LucHermitte/ITK,thewtex/ITK,hendradarwin/ITK,CapeDrew/DITK,CapeDrew/DITK,eile/ITK,GEHC-Surgery/ITK,CapeDrew/DITK,cpatrick/ITK-RemoteIO,fbudin69500/ITK,itkvideo/ITK,jcfr/ITK,biotrump/ITK,atsnyder/ITK,Kitware/ITK,itkvideo/ITK,jmerkow/ITK,stnava/ITK,GEHC-Surgery/ITK,richardbeare/ITK,InsightSoftwareConsortium/ITK,blowekamp/ITK,CapeDrew/DITK,wkjeong/ITK,fbudin69500/ITK,fedral/ITK,stnava/ITK,stnava/ITK,Kitware/ITK,PlutoniumHeart/ITK,vfonov/ITK,LucHermitte/ITK,LucasGandel/ITK,daviddoria/itkHoughTransform,heimdali/ITK,wkjeong/ITK,zachary-williamson/ITK,itkvideo/ITK,hinerm/ITK,eile/ITK,BlueBrain/ITK,blowekamp/ITK,cpatrick/ITK-RemoteIO,hjmjohnson/ITK,msmolens/ITK,stnava/ITK,thewtex/ITK,BlueBrain/ITK,jmerkow/ITK,hinerm/ITK,PlutoniumHeart/ITK,ajjl/ITK,jmerkow/ITK,hjmjohnson/ITK,malaterre/ITK,fuentesdt/InsightToolkit-dev,PlutoniumHeart/ITK,msmolens/ITK,spinicist/ITK,CapeDrew/DCMTK-ITK,jcfr/ITK,zachary-williamson/ITK,thewtex/ITK,hendradarwin/ITK,ajjl/ITK,fedral/ITK,richardbeare/ITK,spinicist/ITK,ajjl/ITK,spinicist/ITK,daviddoria/itkHoughTransform,ajjl/ITK,richardbeare/ITK,paulnovo/ITK,CapeDrew/DCMTK-ITK,cpatrick/ITK-RemoteIO,fuentesdt/InsightToolkit-dev,zachary-williamson/ITK,hinerm/ITK,LucasGandel/ITK,biotrump/ITK,BRAINSia/ITK,hendradarwin/ITK,atsnyder/ITK,PlutoniumHeart/ITK,GEHC-Surgery/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,vfonov/ITK,paulnovo/ITK,jcfr/ITK,hjmjohnson/ITK,wkjeong/ITK,ajjl/ITK,biotrump/ITK,biotrump/ITK,stnava/ITK,spinicist/ITK,BlueBrain/ITK,zachary-williamson/ITK,eile/ITK,malaterre/ITK,wkjeong/ITK,CapeDrew/DCMTK-ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,ajjl/ITK,jmerkow/ITK,CapeDrew/DITK,hjmjohnson/ITK,vfonov/ITK,thewtex/ITK,hendradarwin/ITK,malaterre/ITK,GEHC-Surgery/ITK,wkjeong/ITK,paulnovo/ITK,biotrump/ITK,LucasGandel/ITK,jmerkow/ITK,fuentesdt/InsightToolkit-dev,wkjeong/ITK,GEHC-Surgery/ITK,daviddoria/itkHoughTransform,paulnovo/ITK,fbudin69500/ITK,rhgong/itk-with-dom,hendradarwin/ITK,malaterre/ITK,blowekamp/ITK,fuentesdt/InsightToolkit-dev,hjmjohnson/ITK,fbudin69500/ITK,atsnyder/ITK,BRAINSia/ITK,PlutoniumHeart/ITK,vfonov/ITK,cpatrick/ITK-RemoteIO,CapeDrew/DITK,fuentesdt/InsightToolkit-dev,Kitware/ITK,blowekamp/ITK