tzcode-native: fix build with gcc-13 on host

tzcode-native: fix build with gcc-13 on host

* passing -std=c2x to avoid build failure with gcc-13 on host
  works as well, but the resulting zic then segfaults when
  used in tzdata, use a fix from upstream instead

* reported upstream in https://mm.icann.org/pipermail/tz/2023-March/032690.html

* fixes:
  http://errors.yoctoproject.org/Errors/Details/697913/

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 5dabf677f38c209fb6a8ba837d5a66fd89f57d4d)
Signed-off-by: Steve Sakoman <steve@sakoman.com>