Chapter 7 (Centralized exiting of functions) of the coding style
documentation is unclear at times, and lacks some information (such
as the possibility to indent labels with a single space.) Clarify and
complete it.
Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Markus Elfring <elfring@users.sourceforge.net> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net>