LibFuzzer support for 32bit MSVC

This fixes the two build errors when trying to compile LibFuzzer for
32bit with MSVC.

    - authored by Max Shavrick (mxms at microsoft)

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@369704 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed