ices/91603.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#91603

pub trait WorldQuery {
    type Fetch: for<'world> Fetch<'world>;
}

fn main() {}

pub trait Fetch<'world> {
    type Item;
}

pub type QueryItem<'w, Q> = <<Q as WorldQuery>::Fetch as Fetch<'w>>::Item;

fn first_child() -> impl FnOnce(&u32) -> QueryItem<u32> {}

=== stdout ===
=== stderr ===
error[E0277]: expected a `FnOnce<(&u32,)>` closure, found `()`
  --> /home/runner/work/glacier/glacier/ices/91603.rs:13:21
   |
13 | fn first_child() -> impl FnOnce(&u32) -> QueryItem<u32> {}
   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected an `FnOnce<(&u32,)>` closure, found `()`
   |
   = help: the trait `for<'r> FnOnce<(&'r u32,)>` is not implemented for `()`

error[E0277]: the trait bound `u32: WorldQuery` is not satisfied
  --> /home/runner/work/glacier/glacier/ices/91603.rs:13:21
   |
13 | fn first_child() -> impl FnOnce(&u32) -> QueryItem<u32> {}
   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `WorldQuery` is not implemented for `u32`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0277`.
==============