two warning fixes for the benefit of visual c when warnings are turned up
BUG=none
TESTED=builds with higher warning levels on windows
Review URL: http://codereview.chromium.org/7331010

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libjpeg_turbo@91819 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
2 files changed