clippy: Fixes blocks_in_conditions warning

[brooksprumo]

Problem

Clippy throws this warning when I run locally:

warning: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let`
    --> cli/src/cluster_query.rs:1440:42
     |
1440 |       match ctrlc::try_set_handler(move || {
     |  __________________________________________^
1441 | |         let _ = signal_sender.send(());
1442 | |     }) {
     | |_____^
     |
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blocks_in_conditions
     = note: `#[warn(clippy::blocks_in_conditions)]` on by default

Summary of Changes

Move the closure out of the scrutinee.

[yihau]

🪖

[mergify]

automerge label removed due to a CI failure