api.c fix unused variable compile warning
diff --git a/api.c b/api.c
index 77ab5c2..3879686 100644
--- a/api.c
+++ b/api.c
@@ -2029,7 +2029,7 @@ static void send_result(SOCKETTYPE c, bool isjson)
}
-static void tidyup(void *arg)
+static void tidyup(__maybe_unused void *arg)
{
bye = 1;