peer: free init packet.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

daemon/cryptopkt.c

@@ -255,6 +255,8 @@ static struct io_plan *recv_body(struct io_conn *conn, struct peer *peer)
 {
 	struct io_data *iod = peer->io_data;
 
+	assert(!peer->inpkt);
+
 	/* We have full packet. */
 	peer->inpkt = decrypt_body(iod, iod, peer->log);
 	if (!peer->inpkt)

daemon/peer.c

@@ -2145,6 +2145,8 @@ static struct io_plan *init_pkt_in(struct io_conn *conn, struct peer *peer)
 	}
 
 	/* Back into normal mode. */
+	peer->inpkt = tal_free(peer->inpkt);
+
 	peer_has_connected(peer);
 	return io_duplex(conn,
 			 peer_read_packet(conn, peer, pkt_in),
@@ -2432,6 +2434,7 @@ struct peer *new_peer(struct lightningd_state *dstate,
 	peer->io_data = NULL;
 	peer->secrets = NULL;
 	list_head_init(&peer->watches);
+	peer->inpkt = NULL;
 	peer->outpkt = tal_arr(peer, Pkt *, 0);
 	peer->open_jsoncmd = NULL;
 	peer->commit_jsoncmd = NULL;