[Bug c++/95519] [coroutines] non-functions for promise_type::return_void not supported

[bruck.michael at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95519

--- Comment #3 from Michael Bruck <bruck.michael at gmail dot com> ---
Some of the abort messages in main were not updated after copy/paste
"Failed to call one of the ... cases"