libstd: add an RAII utility for sys_common::mutex::Mutex

Signed-off-by: NODA, Kai <nodakai@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libstd/sync/mutex.rs b/src/libstd/sync/mutex.rs
index f3503b0b3a6..e5a410644b9 100644
--- a/src/libstd/sync/mutex.rs
+++ b/src/libstd/sync/mutex.rs
@@ -227,7 +227,7 @@ impl<T: ?Sized> Mutex<T> {
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn lock(&self) -> LockResult<MutexGuard<T>> {
         unsafe {
-            self.inner.lock();
+            self.inner.raw_lock();
             MutexGuard::new(self)
         }
     }
@@ -454,7 +454,7 @@ impl<'a, T: ?Sized> Drop for MutexGuard<'a, T> {
     fn drop(&mut self) {
         unsafe {
             self.__lock.poison.done(&self.__poison);
-            self.__lock.inner.unlock();
+            self.__lock.inner.raw_unlock();
         }
     }
 }