ices/91461.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#91461

#[d=n(_:d:,)]

=== stdout ===
=== stderr ===
error: expected identifier, found reserved identifier `_`
 --> /home/runner/work/glacier/glacier/ices/91461.rs:1:7
  |
1 | #[d=n(_:d:,)]
  |       ^ expected identifier, found reserved identifier

error: expected type, found `,`
 --> /home/runner/work/glacier/glacier/ices/91461.rs:1:11
  |
1 | #[d=n(_:d:,)]
  |     -    -^ expected type
  |     |    |
  |     |    tried to parse a type due to this type ascription
  |     while parsing this struct
  |
  = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `<expr>: <type>`
  = note: see issue #23416 <https://github.com/rust-lang/rust/issues/23416> for more information

error: expected type, found `,`
 --> /home/runner/work/glacier/glacier/ices/91461.rs:1:11
  |
1 | #[d=n(_:d:,)]
  |          -^ expected type
  |          |
  |          tried to parse a type due to this type ascription
  |
  = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `<expr>: <type>`
  = note: see issue #23416 <https://github.com/rust-lang/rust/issues/23416> for more information

error: expected item after attributes
 --> /home/runner/work/glacier/glacier/ices/91461.rs:1:1
  |
1 | #[d=n(_:d:,)]
  | ^^^^^^^^^^^^^

error: aborting due to 4 previous errors

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