This attribute was added during the dev stage. But it is useless now the
function is used. So, just remove it.
/* Try to send the header for a chunk of <len> bytes. It returns the number of
* bytes consumed or zero if nothing was done or if an error occurred..
*/
-static __maybe_unused size_t h1_make_chunk(struct h1s *h1s, struct h1m * h1m, size_t len)
+static size_t h1_make_chunk(struct h1s *h1s, struct h1m * h1m, size_t len)
{
struct h1c *h1c = h1s->h1c;
struct buffer outbuf;