common: use ref_t<M>

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

diff --git a/src/common/CommandTable.h b/src/common/CommandTable.h
index 3c16d8d4054527a404c1e93feec01bf19c360ae2..fb40101e3ca0445fc3c48de5d5810ec518677718 100644 (file)
--- a/src/common/CommandTable.h
+++ b/src/common/CommandTable.h
@@ -29,7 +29,7 @@ class CommandOp
   ceph::buffer::list   *outbl;
   std::string  *outs;
 
-  MCommand::ref get_message(const uuid_d &fsid) const
+  ceph::ref_t<MCommand> get_message(const uuid_d &fsid) const
   {
     auto m = make_message<MCommand>(fsid);
     m->cmd = cmd;