connectd: fix websocket binding when we're doing both IPv4 and IPv6 on same port.

We would fail connectd when listening on the IPv6 version failed; instead we should
allow that.

Changelog-Experimental: experimental-websocket-port fixed to work with default addresses.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

connectd/connectd.c

@@ -1413,14 +1413,13 @@ static struct wireaddr_internal *setup_listeners(const tal_t *ctx,
 			/* Override with websocket port */
 			addr = binding[i].u.wireaddr;
 			addr.port = daemon->websocket_port;
-			handle_wireaddr_listen(daemon, &addr, false, true);
+			if (handle_wireaddr_listen(daemon, &addr, true, true))
 				announced_some = true;
 			/* FIXME: We don't report these bindings to
 			 * lightningd, so they don't appear in
 			 * getinfo. */
 		}
 
-
 		/* We add the websocket port to the announcement if it
 		 * applies to any */
 		if (announced_some) {