defect 740

if open callback isn't set on saCkptCheckpointOpenAsync, return SA_AIS_ERR_INIT


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@758 fd59a12c-fef9-0310-b244-a6a79926bd2f

lib/ckpt.c

@@ -635,6 +635,11 @@ saCkptCheckpointOpenAsync (
 		goto error_exit;
 	}
 
+	if (ckptInstance->callbacks.saCkptCheckpointOpenCallback == NULL) {
+		error = SA_AIS_ERR_INIT;
+		goto error_put_ckpt;
+	}
+
 	error = saHandleCreate (&checkpointHandleDatabase,
 		sizeof (struct ckptCheckpointInstance), &checkpointHandle);
 	if (error != SA_AIS_OK) {