Wireguard Windows ARM64 Build 21327

[Jason A. Donenfeld]

Hi Bradley,

The hardware I ordered finally came and I was able to reproduce and
then fix the bug, which was in the Go runtime.

The bug report I filed is here: https://github.com/golang/go/issues/45138

As of writing, the fix I've submitted is here:
https://go-review.googlesource.com/c/go/+/303273/
But that fix could wind up being wrong and replaced with something
else. Either way, as soon as that or something else is merged, I'll
cut a new release with the fix in it.

Thanks again for the report.

Regards,
Jason