ices/94378.rs: fixed with no errors

[github-actions]

Issue: rust-lang/rust#94378

fn f<'a, 'b, 'd, 'e> (
    x: for<'c> fn(
        fn(&'c fn(&'c ())),
        fn(&'c fn(&'c ())),
        fn(&'c fn(&'c ())),
        fn(&'c fn(&'c ())),
    )
) -> fn(
        fn(&'a fn(&'d ())),
        fn(&'b fn(&'d ())),
        fn(&'a fn(&'e ())),
        fn(&'b fn(&'e ())),
) {
    x
}

fn main() {}

=== stdout ===
=== stderr ===
warning: function is never used: `f`
 --> /home/runner/work/glacier/glacier/ices/94378.rs:1:4
  |
1 | fn f<'a, 'b, 'd, 'e> (
  |    ^
  |
  = note: `#[warn(dead_code)]` on by default

warning: 1 warning emitted

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