[Bug ada/124418] implementation of interface with null procedure by protected type causes segfault if procedure is not overridden

[liam at liampwll dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124418

--- Comment #3 from Liam Powell <liam at liampwll dot com> ---
Do I really need to post exactly where every bug came from? This one came from
trying to make this procedure null by default:
https://github.com/Prunt3D/prunt/blob/8e3df498c46af251fb1f0710ed8ec54b4e19115b/src/prunt-modules.ads#L61