ices/91801-1.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#91801

fn or<'a>(first: &'static (dyn Fn(&'a i32))) -> dyn 'a + Fn(&'a i32) {
   return Box::new(panic!());
}

fn main() {}

=== stdout ===
=== stderr ===
warning: unreachable call
 --> /home/runner/work/glacier/glacier/ices/91801-1.rs:2:11
  |
2 |    return Box::new(panic!());
  |           ^^^^^^^^ -------- any code following this expression is unreachable
  |           |
  |           unreachable call
  |
  = note: `#[warn(unreachable_code)]` on by default

error[E0746]: return type cannot have an unboxed trait object
 --> /home/runner/work/glacier/glacier/ices/91801-1.rs:1:49
  |
1 | fn or<'a>(first: &'static (dyn Fn(&'a i32))) -> dyn 'a + Fn(&'a i32) {
  |                                                 ^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
  |
  = note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits>
help: use `impl 'a + Fn(&'a i32)` as the return type, as all return paths are of type `Box<_>`, which implements `'a + Fn(&'a i32)`
  |
1 | fn or<'a>(first: &'static (dyn Fn(&'a i32))) -> impl 'a + Fn(&'a i32) {
  |                                                 ~~~~~~~~~~~~~~~~~~~~~

error: aborting due to previous error; 1 warning emitted

For more information about this error, try `rustc --explain E0746`.
==============