ices/73980.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#73980

struct X<P,Q>(P,Q);
struct L<T:?Sized>(T);

impl<T:?Sized> L<T>{
    const S: usize=1;
}

impl<T> X<T,[u8;L::<T>::S]> {}

fn main() {}

=== stdout ===
=== stderr ===
error: generic parameters may not be used in const operations
 --> /home/runner/work/glacier/glacier/ices/73980.rs:8:21
  |
8 | impl<T> X<T,[u8;L::<T>::S]> {}
  |                     ^ cannot perform const operation using `T`
  |
  = note: type parameters may not be used in const expressions
  = help: use `#![feature(const_generics)]` and `#![feature(const_evaluatable_checked)]` to allow generic const expressions

error: aborting due to previous error

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