MINOR: quic: Try to accept 0-RTT connections

When a listener managed to derive 0-RTT RX secrets we consider it accepted
the early data. So we enqueue the connection into the accept queue.
diff --git a/src/xprt_quic.c b/src/xprt_quic.c
index a1fa7db..d7e6805 100644
--- a/src/xprt_quic.c
+++ b/src/xprt_quic.c
@@ -779,6 +779,12 @@
 	}
 
 	rx->flags |= QUIC_FL_TLS_SECRETS_SET;
+	/* Enqueue this connection asap if we could derive O-RTT secrets as
+	 * listener. Note that a listener derives only RX secrets for this
+	 * level.
+	 */
+	if (qc_is_listener(qc) && level == ssl_encryption_early_data)
+		quic_accept_push_qc(qc);
 
 	if (!write_secret)
 		goto tp;