Fix more “a”/“an” typos

Author: steffahn

core/src/array/iter.rs

@@ -45,7 +45,7 @@ impl<T, const N: usize> IntoIter<T, N> {
     /// use std::array;
     ///
     /// for value in array::IntoIter::new([1, 2, 3, 4, 5]) {
-    ///     // The type of `value` is a `i32` here, instead of `&i32`
+    ///     // The type of `value` is an `i32` here, instead of `&i32`
     ///     let _: i32 = value;
     /// }
     /// ```

std/src/ffi/c_str.rs

@@ -939,7 +939,7 @@ impl<'a> From<&'a CString> for Cow<'a, CStr> {
 
 #[stable(feature = "shared_from_slice2", since = "1.24.0")]
 impl From<CString> for Arc<CStr> {
-    /// Converts a [`CString`] into a [`Arc`]`<CStr>` without copying or allocating.
+    /// Converts a [`CString`] into an [`Arc`]`<CStr>` without copying or allocating.
     #[inline]
     fn from(s: CString) -> Arc<CStr> {
         let arc: Arc<[u8]> = Arc::from(s.into_inner());

std/src/ffi/os_str.rs

@@ -897,7 +897,7 @@ impl Clone for Box<OsStr> {
 
 #[stable(feature = "shared_from_slice2", since = "1.24.0")]
 impl From<OsString> for Arc<OsStr> {
-    /// Converts an [`OsString`] into a [`Arc`]`<OsStr>` without copying or allocating.
+    /// Converts an [`OsString`] into an [`Arc`]`<OsStr>` without copying or allocating.
     #[inline]
     fn from(s: OsString) -> Arc<OsStr> {
         let arc = s.inner.into_arc();

std/src/sys_common/remutex/tests.rs

@@ -30,7 +30,7 @@ fn smoke() {
 #[test]
 fn is_mutex() {
     let m = unsafe {
-        // FIXME: Simplify this if Arc gets a Arc::get_pin_mut.
+        // FIXME: Simplify this if Arc gets an Arc::get_pin_mut.
         let mut m = Arc::new(ReentrantMutex::new(RefCell::new(0)));
         Pin::new_unchecked(Arc::get_mut_unchecked(&mut m)).init();
         Pin::new_unchecked(m)
@@ -52,7 +52,7 @@ fn is_mutex() {
 #[test]
 fn trylock_works() {
     let m = unsafe {
-        // FIXME: Simplify this if Arc gets a Arc::get_pin_mut.
+        // FIXME: Simplify this if Arc gets an Arc::get_pin_mut.
         let mut m = Arc::new(ReentrantMutex::new(()));
         Pin::new_unchecked(Arc::get_mut_unchecked(&mut m)).init();
         Pin::new_unchecked(m)