Mark unix::locks::futex::Mutex::new as #[inline].

Author: m-ou-se

library/std/src/sys/unix/locks/futex.rs

@@ -16,6 +16,7 @@ pub struct Mutex {
 }
 
 impl Mutex {
+    #[inline]
     pub const fn new() -> Self {
         Self { futex: AtomicI32::new(0) }
     }