libxtables: Add exit_error cb to xtables_globals

Introduce exit_error() as part of xtables_globals structure.
When an application registers its xtables_globals definition
and does not specify its exit_error() it gets assigned a
basic version

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2 files changed