[Bug c++/93689] ICE with default argument in lambda used as non type template argument

[malle at umich dot edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93689

--- Comment #3 from malle at umich dot edu ---
@Marek Polacek do you (or anyone) think this is a good first issue?  I am
curious to try contributing.