[Issue 20458] CRTP + pass alias to virtual member to mixin = runtime crash

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20458

hsteoh at quickfur.ath.cx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hsteoh at quickfur.ath.cx

--