ices/96572-2.rs: fixed with no errors

=== stdout ===
=== stderr ===
warning: unused variable: `a`
 --> /home/runner/work/glacier/glacier/ices/96572-2.rs:8:15
  |
8 |         Some((a, b)) => (),
  |               ^ help: if this is intentional, prefix it with an underscore: `_a`
  |
  = note: `#[warn(unused_variables)]` on by default

warning: unused variable: `b`
 --> /home/runner/work/glacier/glacier/ices/96572-2.rs:8:18
  |
8 |         Some((a, b)) => (),
  |                  ^ help: if this is intentional, prefix it with an underscore: `_b`

warning: 2 warnings emitted

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

Author: rustbot