ices/108683.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#108683

fn example(var: i32) {
    || {
        let 0 = var;
    };
}

fn main() {}

=== stdout ===
=== stderr ===
error[E0005]: refutable pattern in local binding
 --> /home/runner/work/glacier/glacier/ices/108683.rs:3:13
  |
3 |         let 0 = var;
  |             ^ patterns `i32::MIN..=-1_i32` and `1_i32..=i32::MAX` not covered
  |
  = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
  = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
  = note: the matched value is of type `i32`
help: you might want to use `if let` to ignore the variants that aren't matched
  |
3 |         if let 0 = var { todo!() };
  |         ++             +++++++++++
help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits
  |
3 |         let _0 = var;
  |             +

error: aborting due to previous error

For more information about this error, try `rustc --explain E0005`.
==============