Do not include msgr_rdma.h into messenger.h

src/messenger.h

@@ -18,10 +18,6 @@
 #include "timerfd_manager.h"
 #include <ringloop.h>
 
-#ifdef WITH_RDMA
-#include "msgr_rdma.h"
-#endif
-
 #define CL_READ_HDR 1
 #define CL_READ_DATA 2
 #define CL_READ_REPLY_DATA 3
@@ -44,6 +40,11 @@ struct msgr_sendp_t
     int flags;
 };
 
+#ifdef WITH_RDMA
+struct msgr_rdma_connection_t;
+struct msgr_rdma_context_t;
+#endif
+
 struct osd_client_t
 {
     int refs = 0;