Bug#1097099: krb5: ftbfs with GCC-15

[Eduardo Barretto]

Control: tags -1 + fixed-upstream

This issue is already fixed in upstream version 1.22.1 and the commit
that fixes it is:
https://github.com/krb5/krb5/commit/4b9d7f7c107f01a61600fddcd8cde3812d0366a2