ices/75983.rs: fixed with no errors

[github-actions]

Issue: rust-lang/rust#75983

#![feature(trait_alias)]

struct Bar;
trait Foo {}
impl Foo for Bar {}

trait Baz = Foo where Bar: Foo;

fn new() -> impl Baz {
    Bar
}

fn main() {}

=== stdout ===
=== stderr ===
warning: function is never used: `new`
 --> /home/runner/work/glacier/glacier/ices/75983.rs:9:4
  |
9 | fn new() -> impl Baz {
  |    ^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: 1 warning emitted

==============