style: cargo fmt

Reformat lines left non-canonical by earlier edits (a clippy one-liner,
a struct literal that now fits one line) and a stale import order in the
basic test. Formatting only, no behavior change.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>

Author: ming1

src/dev.rs

@@ -2935,7 +2935,9 @@ impl<T: Qcow2IoOps> Qcow2Dev<T> {
     /// Prepare everything(loading l1/refcount table) for handling any qcow2 IO
     #[async_recursion(?Send)]
     pub async fn qcow2_prep_io(&self) -> Qcow2Result<()> {
-        if let Some(back) = &self.backing_file { back.qcow2_prep_io().await? };
+        if let Some(back) = &self.backing_file {
+            back.qcow2_prep_io().await?
+        };
         self.__qcow2_prep_io().await
     }
 }

src/sync_io.rs

@@ -21,10 +21,7 @@ impl Qcow2IoSync {
             crate::ops::set_direct_io(fd);
         }
 
-        Qcow2IoSync {
-            _file: file,
-            fd,
-        }
+        Qcow2IoSync { _file: file, fd }
     }
 
     #[inline(always)]

tests/basic.rs

@@ -4,6 +4,7 @@ mod common;
 mod integretion {
     use crate::common::*;
     use crypto_hash::{hex_digest, Algorithm};
+    use hex;
     use qcow2_rs::dev::*;
     use qcow2_rs::helpers::Qcow2IoBuf;
     use qcow2_rs::qcow2_default_params;
@@ -13,7 +14,6 @@ mod integretion {
     use std::path::PathBuf;
     use std::time::Instant;
     use tokio::runtime::Runtime;
-    use hex;
 
     #[test]
     fn test_qcow2_parsing() {