extensions: libxt_statistic: Fix save output

Suppressing '--packet 0' in save output resulted in restore failure.

This patch includes '--packet 0' in save output while continuing to
suppress it in print output.

Signed-off-by: Tom Eastep <teastep@shorewall.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
1 file changed