xtables-translate: fix multiple spaces issue

This patch fixes a multiple spaces issue. The problem arises when a rule
set loaded through iptables-compat-restore is listed in nft.

Before this commit, two spaces were printed after every match
translation:

$ sudo iptables-save
*filter
:INPUT ACCEPT [0:0]
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p tcp -m multiport --dports 80:85 -m ttl --ttl-gt 5 -j ACCEPT
COMMIT

$ sudo iptables-compat-restore iptables-save

$ sudo nft list ruleset
table ip filter {
    chain INPUT {
        type filter hook input priority 0; policy accept;
        ct state related,established  counter packets 0 bytes 0 accept
                                    ^^
        ip protocol tcp tcp dport 80-85  ip ttl gt 5  counter packets 0 bytes 0 accept
                                       ^^           ^^
    }
}

Signed-off-by: Pablo M. Bermudo Garay <pablombg@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/extensions/libip6t_hbh.c b/extensions/libip6t_hbh.c
index 416681d2..cb7e4e8a 100644
--- a/extensions/libip6t_hbh.c
+++ b/extensions/libip6t_hbh.c
@@ -173,7 +173,7 @@ static int hbh_xlate(const void *ip, const struct xt_entry_match *match,
 	    (optinfo->flags & IP6T_OPTS_OPTS))
 		return 0;
 
-	xt_xlate_add(xl, "hbh hdrlength %s%u ",
+	xt_xlate_add(xl, "hbh hdrlength %s%u",
 		     (optinfo->invflags & IP6T_OPTS_INV_LEN) ? "!= " : "",
 		     optinfo->hdrlen);