ices/93688.sh: fixed with no errors

[github-actions]

Issue: rust-lang/rust#93688

rustc -Zmir-opt-level=3 --emit=mir -Zdump-mir=all  - 2>&1 << EOF

// run-pass

#![allow(dead_code, unused_imports)]
#![feature(no_core)]
#![no_core]
// edition:2018

extern crate std;
extern crate core;
use core::{prelude::v1::*, *};

fn foo() {
    for _ in &[()] {}
}

fn bar() -> Option<()> {
    None?
}

fn main() {}


fn bar2() -> Option<()> {
    None?
}

fn bar3() {
    match Option::<Option<()>>::None {
        Some(v) => {}
        None => {}
    }
}

EOF

=== stdout ===
warning: unused variable: `v`
  --> <anon>:30:14
   |
30 |         Some(v) => {}
   |              ^ help: if this is intentional, prefix it with an underscore: `_v`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: 1 warning emitted

=== stderr ===
==============