[PATCH 0/1] MR1713: loader: In macOS preloader, set NXArgc, NXArgv, and environ on i386 and x86_64.

[Brendan Shanks (＠bshanks)]

This resolves a bug seen on i386 where `environ` was not being correctly set in the launched process, causing `environ[0]` to be lost. Setting `NXArgc`/`NXArgv` doesn't fix any known bug but seems like a good idea.

See https://gitlab.winehq.org/bshanks/mac-preloader-testbed for a standalone test app.