[PATCH] ctdb-tools: Avoid deferencing argv[0] if argc == 0 (bug 12723)

[Martin Schwenke]

On Tue, 28 Mar 2017 18:31:27 +1100, Amitay Isaacs via samba-technical
<samba-technical at lists.samba.org> wrote:

> This avoids ctdb_event tool crashing if event name is not specified to
> "ctdb_event status" command.
> 
> Please review and push.

With additional fixes discussed offline...

Reviewed-by: Martin Schwenke <martin at meltin.net>

Pushed...

peace & happiness,
martin