STYLE: Minor Cppcheck style fix
STYLE: Minor Cppcheck style fix

Change-Id: I702258cf32e813935907f3d7e1f00bb6d66405a8

aylward/ITKTubeTK,KitwareMedical/TubeTK,matthieuheitz/TubeTK,matthieuheitz/TubeTK,sumedhasingla/TubeTK,cdeepakroy/TubeTK,sumedhasingla/TubeTK,aylward/ITKTubeTK,sumedhasingla/TubeTK,KitwareMedical/ITKTubeTK,thewtex/TubeTK,thewtex/TubeTK,LucasGandel/TubeTK,LucasGandel/TubeTK,LucasGandel/TubeTK,cdeepakroy/TubeTK,LucasGandel/TubeTK,thewtex/TubeTK,KitwareMedical/ITKTubeTK,matthieuheitz/TubeTK,aylward/ITKTubeTK,KitwareMedical/TubeTK,KitwareMedical/ITKTubeTK,cdeepakroy/TubeTK,thewtex/TubeTK,sumedhasingla/TubeTK,KitwareMedical/ITKTubeTK,KitwareMedical/TubeTK,KitwareMedical/TubeTK,matthieuheitz/TubeTK,cdeepakroy/TubeTK,aylward/ITKTubeTK