ices/81845.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#81845

fn e() {
    if *let x = 0 { x

=== stdout ===
=== stderr ===
error: this file contains an unclosed delimiter
 --> /home/runner/work/glacier/glacier/ices/81845.rs:2:23
  |
1 | fn e() {
  |        - unclosed delimiter
2 |     if *let x = 0 { x
  |                   -   ^
  |                   |
  |                   unclosed delimiter

error[E0658]: `let` expressions in this position are experimental
 --> /home/runner/work/glacier/glacier/ices/81845.rs:2:9
  |
2 |     if *let x = 0 { x
  |         ^^^^^^^^^
  |
  = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
  = help: add `#![feature(let_chains)]` to the crate attributes to enable

error: `let` expressions are not supported here
 --> /home/runner/work/glacier/glacier/ices/81845.rs:2:9
  |
2 |     if *let x = 0 { x
  |         ^^^^^^^^^
  |
  = note: only supported directly in conditions of `if`- and `while`-expressions
  = note: as well as when nested within `&&` and parenthesis in those conditions

error[E0614]: type `bool` cannot be dereferenced
 --> /home/runner/work/glacier/glacier/ices/81845.rs:2:8
  |
2 |     if *let x = 0 { x
  |        ^^^^^^^^^^

error[E0308]: mismatched types
 --> /home/runner/work/glacier/glacier/ices/81845.rs:2:21
  |
1 | fn e() {
  |        - possibly return type missing here?
2 |     if *let x = 0 { x
  |                     ^ expected `()`, found integer

error: aborting due to 5 previous errors

Some errors have detailed explanations: E0308, E0614, E0658.
For more information about an error, try `rustc --explain E0308`.
==============

[JohnTitor]

Actually it was a duplicate issue but merging anyway.