Fix Windows warnings.

This fixes a number of trivial warnings in the Windows build. This is part of a larger effort to make the Windows build warning-free.

See http://reviews.llvm.org/D3914 for more details.

Change by Zachary Turner

llvm-svn: 209749
GitOrigin-RevId: 0a70a845342cd75f40b7de3f0e7e70d973f5aecb
7 files changed