bug#56527: 28.1; Crash on macOS with magit

[Jonathan Mitchell]

Thanks for taking the time to help with this.

As I wrote in my previous email, I can't reproduce this issue at all with the latest copy of Emacs 29. I've also tried testing emacs-28 in a TTY session, but I can't reproduce the issue there either.

For completeness, I've attached 3 different runs of the latest emacs-28 branch starting from `emacs -Q` and following the recipe in my last email.

run #2.txt
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run #3.txt
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run #1.txt
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