mysys/my_timezone.cc does not compile on AIX

/home/buildbot/aix/build/mariadb-11.4.0/mysys/my_timezone.cc: In function 'void my_tzinfo(time_t, my_tz*)':

/home/buildbot/aix/build/mariadb-11.4.0/mysys/my_timezone.cc:216:76: error: 'struct tm' has no member named 'tm_zone'; did you mean 'tm_mon'?

  216 |   snprintf(tz->abbreviation, sizeof(tz->abbreviation), "%s", tm_local_time.tm_zone);

      |                                                                            ^~~~~~~

      |                                                                            tm_mon

/home/buildbot/aix/build/mariadb-11.4.0/mysys/my_timezone.cc:217:37: error: 'struct tm' has no member named 'tm_gmtoff'

  217 |   tz->seconds_offset= tm_local_time.tm_gmtoff;

      |                                     ^~~~~~~~~