ices/68542.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#68542

struct Bug {
    a: [(); (|| { 0 })()]
}

fn main() {}

=== stdout ===
=== stderr ===
error[E0015]: calls in constants are limited to constant functions, tuple structs and tuple variants
 --> /home/runner/work/glacier/glacier/ices/68542.rs:2:13
  |
2 |     a: [(); (|| { 0 })()]
  |             ^^^^^^^^^^^^

error[E0080]: evaluation of constant value failed
 --> /home/runner/work/glacier/glacier/ices/68542.rs:2:13
  |
2 |     a: [(); (|| { 0 })()]
  |             ^^^^^^^^^^^^ calling non-const function `Bug::a::{{constant}}#0::{{closure}}#0`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0015, E0080.
For more information about an error, try `rustc --explain E0015`.
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