Make libexif play happy with MSVC's non-standard inlining. This removes an unnecessary inline in exif-tag.c. TBR=rnk Review URL: https://codereview.chromium.org/235863016 git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libexif@263766 4ff67af0-8c30-449e-8e8b-ad334ec8d88c