Matthias Krüger
94c19c6522
Various `HirTyLowerer` cleanups Previously there was some ad-hoc specialization going on, because you could call `allows_infer`, which basically was deciding between whether the trait object was backed by `FnCtxt` or by `ItemCtxt`. I moved all the different logic into dedicated methods on `HirTyLowerer` and removed `allows_infer` best reviewed commit-by-commit
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