Rollup merge of #135493 - compiler-errors:legacy-mangle-closure, r=lqd

Fix legacy symbol mangling of closures

When this code was written, there was no `type_of` implementation for closures. That has long since been changed.

In the UI test:

```
trait A where
    [(); (|| {}, 1).1]: Sized,
{
}
```

We tried to walk up the def path tree for the closure, from closure -> anon const -> trait. When we reached the trait, we tried to call `type_of` on it which obviously doesn't do the right thing and ICEs.

Fixes #135418

0 files changed, 0 insertions, 0 deletions