Subject: bug#39304: 28.0.50; Emacs Chess info manual has no Up node

From: Jean-Christophe Helary <[email-masked]>
Date: Mon, 27 Jan 2020 16:55:37 +0900

When hitting U in the top chess.el info manual node "Node has no Up" is
displayed and it is not possible to re-enter the main info manual listing.

In GNU Emacs 28.0.50 (build 2, x86_64-apple-darwin19.2.0, NS appkit-1894.20 Version 10.15.2 (Build 19C57))
of 2020-01-12 built on mabinogion.local
Repository revision: 71ec869a302afd716d39cda5a7a139b28bf252a7
Repository branch: texinfo-qv
Windowing system distributor 'Apple', version 10.3.1894
System Description:  Mac OS X 10.15.2

...
Composing main Info directory...done
user-error: Node has no Up

Major mode: Info