message: mark message classes "final"

silences warnings like:

src/messages/MOSDPGUpdateLogMissingReply.h:74:34: warning: class with destructor marked 'final' cannot be inherited from [-Wfinal-dtor-non-final-class]
  ~MOSDPGUpdateLogMissingReply() final {}
                                 ^
../src/messages/MOSDPGUpdateLogMissingReply.h:21:7: note: mark 'MOSDPGUpdateLogMissingReply' as 'final' to silence this warning
class MOSDPGUpdateLogMissingReply : public MOSDFastDispatchOp {
      ^
1 warning generated.

Signed-off-by: Kefu Chai <kchai@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/messages/MMgrDigest.h b/src/messages/MMgrDigest.h
index e9cddceea5c..69f3368683a 100644
--- a/src/messages/MMgrDigest.h
+++ b/src/messages/MMgrDigest.h
@@ -22,7 +22,7 @@
  * The mgr digest is a way for the mgr to subscribe to things
  * other than the cluster maps, which are needed by 
  */
-class MMgrDigest : public Message {
+class MMgrDigest final : public Message {
 public:
   ceph::buffer::list mon_status_json;
   ceph::buffer::list health_json;