Change destructors to virtual in all basic classes.

Also add some missing final to classes.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/utils/mutex.h b/src/utils/mutex.h
index 37c889e02..9bb3cfcdd 100644
--- a/src/utils/mutex.h
+++ b/src/utils/mutex.h
@@ -31,7 +31,7 @@
  * A mutex provides mutual exclusion of access to certain data that is
  * accessed by multiple threads.
  */
-class Mutex
+class Mutex final
 {
     public:
         Mutex();
@@ -54,7 +54,7 @@ class Mutex
 /**
  * A convenience class for locking a mutex.
  */
-class MutexLocker
+class MutexLocker final
 {
     public:
         explicit MutexLocker(Mutex *mutex);