[pbs-devel] [PATCH backup v3 1/2] backup-proxy: avoid block in if condition

[Maximiliano Sandoval <m.sandoval@proxmox.com>]

Fixes the clippy lint:

```
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`
   --> src/bin/proxmox-backup-proxy.rs:874:58
    |
874 |           let stats = match tokio::task::spawn_blocking(|| {
    |  __________________________________________________________^
875 | |             let hoststats = collect_host_stats_sync();
876 | |             let (hostdisk, datastores) = collect_disk_stats_sync();
877 | |             Arc::new((hoststats, hostdisk, datastores))
878 | |         })
    | |_________^
    |
    = 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
```

Signed-off-by: Maximiliano Sandoval <m.sandoval@proxmox.com>
---
Differences from v2:
 - Rename stats_res to stats_fut
 - Port other uses of single branched `match` to if-let

 src/bin/proxmox-backup-proxy.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/bin/proxmox-backup-proxy.rs b/src/bin/proxmox-backup-proxy.rs
index 9c49026b..a2c48f16 100644
--- a/src/bin/proxmox-backup-proxy.rs
+++ b/src/bin/proxmox-backup-proxy.rs
@@ -871,13 +871,12 @@ async fn run_stat_generator() {
     loop {
         let delay_target = Instant::now() + Duration::from_secs(10);
 
-        let stats = match tokio::task::spawn_blocking(|| {
+        let stats_fut = tokio::task::spawn_blocking(|| {
             let hoststats = collect_host_stats_sync();
             let (hostdisk, datastores) = collect_disk_stats_sync();
             Arc::new((hoststats, hostdisk, datastores))
-        })
-        .await
-        {
+        });
+        let stats = match stats_fut.await {
             Ok(res) => res,
             Err(err) => {
                 log::error!("collecting host stats panicked: {err}");
-- 
2.39.2