ices/95829.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#95829

extern {
    async fn L() {
        async fn M() {}
    }
}

=== stdout ===
=== stderr ===
error: incorrect function inside `extern` block
 --> /home/runner/work/glacier/glacier/ices/95829.rs:2:14
  |
1 |   extern {
  |   ------ `extern` blocks define existing foreign functions and functions inside of them cannot have a body
2 |       async fn L() {
  |  ______________^___-
  | |              |
  | |              cannot have a body
3 | |         async fn M() {}
4 | |     }
  | |_____- help: remove the invalid body: `;`
  |
  = help: you might have meant to write a function accessible through FFI, which can be done by writing `extern fn` outside of the `extern` block
  = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html

error: functions in `extern` blocks cannot have qualifiers
 --> /home/runner/work/glacier/glacier/ices/95829.rs:2:14
  |
1 | extern {
  | ------ in this `extern` block
2 |     async fn L() {
  |              ^
  |
help: remove the qualifiers
  |
2 |     fn L() {
  |     ~~

error[E0601]: `main` function not found in crate `95829`
 --> /home/runner/work/glacier/glacier/ices/95829.rs:5:2
  |
5 | }
  |  ^ consider adding a `main` function to `/home/runner/work/glacier/glacier/ices/95829.rs`

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0601`.
==============