address comments

Author: Mandragorian

src/concurrency/sync.rs

@@ -67,7 +67,6 @@ pub(super) use declare_id;
 declare_id!(MutexId);
 
 /// The mutex kind.
-/// The meaning of this type is defined by concrete mutex implementations.
 #[derive(Debug, Clone, Copy)]
 #[non_exhaustive]
 pub enum MutexKind {

tests/fail-dep/concurrency/libc_pthread_mutex_move.rs

@@ -1,6 +1,6 @@
 //@ignore-target-windows: No pthreads on Windows
-//@[unlock_register]only-target-linux: recursive initializers are non-standard.
 //@revisions: lock trylock unlock_register unlock_detect init
+//@[unlock_register]only-target-linux: recursive initializers are non-standard.
 
 fn main() {
     check();
@@ -22,7 +22,6 @@ fn check() {
     unsafe {
         let mut m: libc::pthread_mutex_t = libc::PTHREAD_MUTEX_INITIALIZER;
         libc::pthread_mutex_lock(&mut m as *mut _);
-        // libc::pthread_mutex_unlock(&mut m as *mut _);
 
         let mut m2 = m;
         libc::pthread_mutex_lock(&mut m2 as *mut _); //~[lock] ERROR: pthread_mutex_t can't be moved after first use
@@ -34,7 +33,6 @@ fn check() {
     unsafe {
         let mut m: libc::pthread_mutex_t = libc::PTHREAD_MUTEX_INITIALIZER;
         libc::pthread_mutex_trylock(&mut m as *mut _);
-        // libc::pthread_mutex_unlock(&mut m as *mut _);
 
         let mut m2 = m;
         libc::pthread_mutex_trylock(&mut m2 as *mut _); //~[trylock] ERROR: pthread_mutex_t can't be moved after first use