ices/67945-2.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#67945

// reduced version by Centril
enum Bug<S> {
    Var = {
        let x: S = 0;
        0
    },
}

=== stdout ===
=== stderr ===
error[E0601]: `main` function not found in crate `67945_2`
 --> /home/runner/work/glacier/glacier/ices/67945-2.rs:2:1
  |
2 | / enum Bug<S> {
3 | |     Var = {
4 | |         let x: S = 0;
5 | |         0
6 | |     },
7 | | }
  | |_^ consider adding a `main` function to `/home/runner/work/glacier/glacier/ices/67945-2.rs`

error[E0308]: mismatched types
 --> /home/runner/work/glacier/glacier/ices/67945-2.rs:4:20
  |
2 | enum Bug<S> {
  |          - this type parameter
3 |     Var = {
4 |         let x: S = 0;
  |                -   ^ expected type parameter `S`, found integer
  |                |
  |                expected due to this
  |
  = note: expected type parameter `S`
                       found type `{integer}`
  = help: type parameters must be constrained to match other types
  = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0308, E0601.
For more information about an error, try `rustc --explain E0308`.
==============

[JohnTitor]

That seems to be fixed.