[openssl/openssl] 83c122: test/timing_load_creds.c: use OPENSSL_SYS_ macros

[Richard Levitte]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 83c1220ad137bb4b651478444c3666c66ec9d640
      https://github.com/openssl/openssl/commit/83c1220ad137bb4b651478444c3666c66ec9d640
  Author: Richard Levitte <levitte at openssl.org>
  Date:   2022-11-19 (Sat, 19 Nov 2022)

  Changed paths:
    M test/timing_load_creds.c

  Log Message:
  -----------
  test/timing_load_creds.c: use OPENSSL_SYS_ macros

A previous change was only half done.  To avoid such mistakes again, we
switch to using the OPENSSL_SYS_ macros, as the are clearer than having
to check a pile of very platform and compiler specific macros.

Reviewed-by: Matt Caswell <matt at openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit at gmail.com>
(Merged from https://github.com/openssl/openssl/pull/19720)