[PATCH lsm/dev] netfilter: Use correct length value in ctnetlink_secctx_size

[Casey Schaufler <casey@xxxxxxxxxxxxxxxx>]

Use the correct value for the context length returned by
security_secid_to_secctx().

Signed-off-by: Casey Schaufler <casey@xxxxxxxxxxxxxxxx>
---
 net/netfilter/nf_conntrack_netlink.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index dd74d4c67c69..edf08cc89f17 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -663,14 +663,14 @@ static inline size_t ctnetlink_acct_size(const struct nf_conn *ct)
 static inline int ctnetlink_secctx_size(const struct nf_conn *ct)
 {
 #ifdef CONFIG_NF_CONNTRACK_SECMARK
-	int len, ret;
+	int ret;
 
 	ret = security_secid_to_secctx(ct->secmark, NULL);
 	if (ret < 0)
 		return 0;
 
 	return nla_total_size(0) /* CTA_SECCTX */
-	       + nla_total_size(sizeof(char) * len); /* CTA_SECCTX_NAME */
+	       + nla_total_size(sizeof(char) * ret); /* CTA_SECCTX_NAME */
 #else
 	return 0;
 #endif