[Bug c++/96543] null check on template pointer parameter fails

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96543

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No, it's fine. I've categorized it as a diagnostic bug, i.e. a bug in a
warning.