error: remove and use standard errno codes instead

This change also adds strerror to string.h.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mutex.h b/src/mutex.h
index c158d5e..fedbb8f 100644
--- a/src/mutex.h
+++ b/src/mutex.h
@@ -151,7 +151,7 @@ void mutex_lock(struct mutex *mutex);
  *
  * This is the non-blocking variant of mutex_lock().
  *
- * Return 0 on success, ERROR_BUSY if locking the mutex failed.
+ * Return 0 on success, EBUSY if locking the mutex failed.
  */
 int mutex_trylock(struct mutex *mutex);