The mr paramter is obviously ignored, but to add this as a callback
the function sig must match.
*/
-void Health_ck_cb( Messenger& mr, Message& mbuf, int mtype, int sid, int len, Msg_component payload, void* data ) {
+void Health_ck_cb( Message& mbuf, int mtype, int sid, int len, Msg_component payload, void* data ) {
unsigned char response[128];
snprintf( (char* ) response, sizeof( response ), "OK\n" );