COMP: Explicitly make constant an unsigned int

This patch addressed the following warning:
itkNoiseBaseImageFilter.h:74:5: warning: this decimal constant is
unsigned only in ISO C90 [enabled by default]

Change-Id: I9a3116a6d8587e34d8460d4d68a797f2f5c13dd9
BUG: Fix uninitialized ivar in NoiseBaseImageFilter

Change-Id: Ib384f723d6ed42d9552aa1b128cfd755e68da732
Merge topic 'AddIJNoiseSimulation2'

0f9bf018 BUG: Fix uninitialized ivar in NoiseBaseImageFilter
022db8ee COMP: Explicitly make constant an unsigned int