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>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/pacman/util.h b/src/pacman/util.h
index 234a631d..53176fae 100644
--- a/src/pacman/util.h
+++ b/src/pacman/util.h
@@ -42,7 +42,7 @@
 int trans_init(pmtransflag_t flags);
 int trans_release(void);
 int needs_root(void);
-int getcols(void);
+int getcols(int def);
 int rmrf(const char *path);
 const char *mbasename(const char *path);
 char *mdirname(const char *path);