Fix bounds of match type cases#14645

Merged

dwijnand merged 2 commits intoscala:mainfrom

dwijnand:match-type/reduce-tparam-bounds-pr

Mar 28, 2022

Commits on Mar 8, 2022

When assigning type cases, substitute any instances of type parameters for the applied arguments
dwijnand
committed
Use substSym instead of mutating symbols
dwijnand
committed