Ensure list_display works on outputs of unknown width

If getcols() returns 0, we were getting stuck before in a loop of no
return. Teach getcols() to take a default value to return if the width
is unknown, and use this everywhere as appropriate.

Also make a few other cleanups while diagnosing this issue, such as
const-ifying some variables.

Noticed-by: Dave Reisner <d@falconindy.com>
Signed-off-by: Dan McGee <dan@archlinux.org>

0 files changed, 0 insertions, 0 deletions