ices/104368.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#104368

struct S {
    d: [u32; {
        #![cfg_attr(not(X),Y) Z]
    }
}

fn main() {}

=== stdout ===
=== stderr ===
error: mismatched closing delimiter: `}`
 --> /home/runner/work/glacier/glacier/ices/104368.rs:2:8
  |
1 | struct S {
  |          - closing delimiter possibly meant for this
2 |     d: [u32; {
  |        ^ unclosed delimiter
...
5 | }
  | ^ mismatched closing delimiter

error: aborting due to previous error

==============