src: constify parameter of nft_*_is_set

The functions nft_*_attr_is_set() is doing no modification
so it is possible to type it to const.

Signed-off-by: Eric Leblond <eric@regit.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/chain.c b/src/chain.c
index 0c7f422..3fb1d03 100644
--- a/src/chain.c
+++ b/src/chain.c
@@ -69,7 +69,7 @@ void nft_chain_free(struct nft_chain *c)
 }
 EXPORT_SYMBOL(nft_chain_free);
 
-bool nft_chain_attr_is_set(struct nft_chain *c, uint16_t attr)
+bool nft_chain_attr_is_set(const struct nft_chain *c, uint16_t attr)
 {
 	return c->flags & (1 << attr);
 }