rule: Fix comparison between rules if number of expressions differ

Before this patch, comparison between rules with distinct number of
expressions indicate that they are equals, however, they are not.
Example:

	r1[e1, e2] == r2[e1, e2, e3]

Fix this by checking that the number of expression is the same.

Reported-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Carlos Falgueras García <carlosfg@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/rule.c b/src/rule.c
index ae7c478..5d0097c 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -1102,6 +1102,7 @@ bool nftnl_rule_cmp(const struct nftnl_rule *r1, const struct nftnl_rule *r2)
 		e1 = nftnl_expr_iter_next(&it1);
 		e2 = nftnl_expr_iter_next(&it2);
 	}
+	eq &= (!e1 && !e2);
 
 	return eq;
 }