Fix Windows x86 build

Summary:
Fix some `-Werror` failures and work around a
bug in the `x86` version of `mingw-w64-crt`'s libraries.

The bump in the `win32` submodule is required for this.

Test Plan: ./validate

Reviewers: austin, bgamari, erikd, simonmar

Reviewed By: simonmar

Subscribers: rwbarton, thomie

Differential Revision: https://phabricator.haskell.org/D3362

1 files changed, 0 insertions, 0 deletions

diff --git a/libraries/Win32 b/libraries/Win32
-Subproject 06d584916a4c32e6d31b60499afd52e32e4281e
+Subproject 67c5cc56f0faeacc553471c8a7d9b9b95e01173