common: log at debug level when we update billboard.

Makes for easier postmortem.

Signed-off-by: Rusty Russell <[email protected]>

Author: rustyrussell

common/peer_billboard.c

@@ -12,6 +12,7 @@ void peer_billboard(bool perm, const char *fmt, ...)
 	str = tal_vfmt(NULL, fmt, ap);
 	va_end(ap);
 
+	status_debug("billboard%s: %s", perm ? " perm" : "", str);
 	status_send(take(towire_status_peer_billboard(NULL, perm, str)));
 	tal_free(str);
 }