[Bug c++/83806] [7 Regression] Spurious -Wunused-but-set-parameter with nullptr

[ma.noack.pr at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83806

--- Comment #7 from Matthias Noack <ma.noack.pr at gmail dot com> ---
Can confirm, that it is fixed in 8.3.0 and 9.2.1.