[Bug c++/65634] [c++-concepts] ICE in check_noexcept_r() for a noexcept constraint on a static member function call requirement

[andrew.n.sutton at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65634

--- Comment #2 from Andrew Sutton <andrew.n.sutton at gmail dot com> ---
Confirmed and fixed 221854, but I'd like a maintainer to look at the attached
patch. 

The bug was caused by asking for TYPE_NOTHROW_P on the function return type
instead of the function type. Strangely, this is only affecting this one test
case and none of the other noexcept tests.