When we defer the mux choice until the ALPN is negociated, don't forget
to wake the stream once it's done, or it will never have the opportunity
to send data.
struct conn_stream *cs = NULL;
struct stream *s = conn->mux_ctx;
+ task_wakeup(s->task, TASK_WOKEN_IO);
conn_clear_xprt_done_cb(conn);
/* Verify if the connection just established. */
if (unlikely(!(conn->flags & (CO_FL_WAIT_L4_CONN | CO_FL_WAIT_L6_CONN | CO_FL_CONNECTED))))