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glibc: Backport fortify namespace fix from upstream [rhel-9]

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      Upstream backported the original change when we still tracking the 2.34 branch, so we should backport its fix as well:

      commit 39ca997ab378990d5ac1aadbaa52aaf1db6d526f
Author: Andreas Schwab <schwab@suse.de>
Date:   Mon Aug 5 10:55:51 2024 +0200

    Fix name space violation in fortify wrappers (bug 32052)
    
    Rename the identifier sz to __sz everywhere.
    
    Fixes: a643f60c53 ("Make sure that the fortified function conditionals are constant")

      (Already backported into RHEL 10 as libc-upstream-2.39-101.patch.)

              fberat@redhat.com Frederic Berat
              fweimer@redhat.com Florian Weimer
              Platform Tools - Libraries Bot Platform Tools - Libraries Bot
              Sergey Kolosov Sergey Kolosov
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