Fix stack alignment in Windows before_loop/after_loop.

This should land as a no-op, as nothing using the stack yet.
It will allow us to land the SSE2 code, which does spill in to_srgb.

CQ_INCLUDE_TRYBOTS=skia.primary:Test-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Debug,Test-Win10-MSVC-Golo-GPU-GT610-x86_64-Release

Change-Id: Ie8000d50a85d56ad6229736d79f3a947f06a808c
Reviewed-on: https://skia-review.googlesource.com/8389
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Herb Derby <herb@google.com>
1 file changed