ices/65466.rs: fixed with no errors

[github-actions]

Issue: rust-lang/rust#65466

#![deny(indirect_structural_match)]

#[derive(PartialEq, Eq)]
enum O<T> {
    Some(*const T), // Can also use PhantomData<T>
    None,
}

struct B;

const C: &[O<B>] = &[O::None];

pub fn foo() {
    let x = O::None;
    match &[x][..] {
        C => (),
        _ => (),
    }
}

fn main() {}

=== stdout ===
=== stderr ===
warning: variant is never constructed: `Some`
 --> /home/runner/work/glacier/glacier/ices/65466.rs:5:5
  |
5 |     Some(*const T), // Can also use PhantomData<T>
  |     ^^^^^^^^^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: 1 warning emitted

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