pytest: fix flake in test_connection.py::test_opener_feerate_reconnect

Make sure it sees disconnect before reconnect, otherwise the next command
fails since we're now disconnected.

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

lightningd/peer_control.c

@@ -1402,6 +1402,7 @@ void peer_disconnect_done(struct lightningd *ld, const u8 *msg)
 	/* If we still have peer, it's disconnected now */
 	p = peer_by_id(ld, &id);
 	if (p) {
+		log_peer_debug(ld->log, &id, "peer_disconnect_done");
 		p->is_connected = false;
 		/* If we only cared about peer because of connectd, free it. */
 		if (list_empty(&p->channels) && !p->uncommitted_channel) {

tests/test_connection.py

@@ -2748,6 +2748,7 @@ def test_opener_feerate_reconnect(node_factory, bitcoind):
 
     # Wait until they reconnect.
     l1.daemon.wait_for_log('Peer transient failure in CHANNELD_NORMAL')
+    l1.daemon.wait_for_log('peer_disconnect_done')
     wait_for(lambda: l1.rpc.getpeer(l2.info['id'])['connected'])
 
     # Should work normally.