src: Constify iterators

Iterators do not modify objects which they iterate, so input pointer must
be const.

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

1 files changed, 4 insertions, 3 deletions

diff --git a/src/chain.c b/src/chain.c
index 4c562fe..ff59f7f 100644
--- a/src/chain.c
+++ b/src/chain.c
@@ -1039,11 +1039,12 @@ int nftnl_chain_list_foreach(struct nftnl_chain_list *chain_list,
 EXPORT_SYMBOL_ALIAS(nftnl_chain_list_foreach, nft_chain_list_foreach);
 
 struct nftnl_chain_list_iter {
-	struct nftnl_chain_list	*list;
-	struct nftnl_chain	*cur;
+	const struct nftnl_chain_list	*list;
+	struct nftnl_chain		*cur;
 };
 
-struct nftnl_chain_list_iter *nftnl_chain_list_iter_create(struct nftnl_chain_list *l)
+struct nftnl_chain_list_iter *
+nftnl_chain_list_iter_create(const struct nftnl_chain_list *l)
 {
 	struct nftnl_chain_list_iter *iter;