cargo fmt updates

src/imp_cs.rs

@@ -1,7 +1,7 @@
 use core::panic::{RefUnwindSafe, UnwindSafe};
 
-use portable_atomic::{AtomicBool, Ordering};
 use critical_section::{CriticalSection, Mutex};
+use portable_atomic::{AtomicBool, Ordering};
 
 use crate::unsync;
 

src/race.rs

@@ -19,10 +19,10 @@
 //! `Acquire` and `Release` have very little performance overhead on most
 //! architectures versus `Relaxed`.
 
-#[cfg(feature = "critical-section")]
-use portable_atomic as atomic;
 #[cfg(not(feature = "critical-section"))]
 use core::sync::atomic;
+#[cfg(feature = "critical-section")]
+use portable_atomic as atomic;
 
 use atomic::{AtomicPtr, AtomicUsize, Ordering};
 use core::cell::UnsafeCell;