ices/86535.rs: fixed with no errors

[github-actions]

Issue: rust-lang/rust#86535

#![allow(incomplete_features)]
#![feature(const_generics)]
#![feature(const_evaluatable_checked)]

struct F<const S: &'static str>;
impl<const S: &'static str> X for F<{ S }> {
    const W: usize = 3;

    fn d(r: &[u8; Self::W]) -> F<{ S }> {
        let x: [u8; Self::W] = [0; Self::W];
        F
    }
}

pub trait X {
    const W: usize;
    fn d(r: &[u8; Self::W]) -> Self;
}

fn main() {}

=== stdout ===
=== stderr ===
warning: unused variable: `x`
  --> /home/runner/work/glacier/glacier/ices/86535.rs:10:13
   |
10 |         let x: [u8; Self::W] = [0; Self::W];
   |             ^ help: if this is intentional, prefix it with an underscore: `_x`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: unused variable: `r`
 --> /home/runner/work/glacier/glacier/ices/86535.rs:9:10
  |
9 |     fn d(r: &[u8; Self::W]) -> F<{ S }> {
  |          ^ help: if this is intentional, prefix it with an underscore: `_r`

warning: 2 warnings emitted

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