[PATCH] security/smack: remove unused varible 'rc'

[Alex Shi]

This varible isn't used and can be removed to avoid a gcc warning:
security/smack/smack_lsm.c:3873:6: warning: variable ‘rc’ set but not
used [-Wunused-but-set-variable]

Signed-off-by: Alex Shi <alex....@linux.alibaba.com>
Cc: Casey Schaufler <ca...@schaufler-ca.com> 
Cc: James Morris <jmor...@namei.org> 
Cc: "Serge E. Hallyn" <se...@hallyn.com> 
Cc: linux-security-mod...@vger.kernel.org 
Cc: linux-kernel@vger.kernel.org 
---
 security/smack/smack_lsm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 5c90b9fa4d40..9994fcfafd70 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -3870,7 +3870,6 @@ static struct smack_known *smack_from_netlbl(struct sock 
*sk, u16 family,
        struct netlbl_lsm_secattr secattr;
        struct socket_smack *ssp = NULL;
        struct smack_known *skp = NULL;
-       int rc;
 
        netlbl_secattr_init(&secattr);
 
@@ -3880,7 +3879,7 @@ static struct smack_known *smack_from_netlbl(struct sock 
*sk, u16 family,
        if (netlbl_skbuff_getattr(skb, family, &secattr) == 0) {
                skp = smack_from_secattr(&secattr, ssp);
                if (secattr.flags & NETLBL_SECATTR_CACHEABLE)
-                       rc = netlbl_cache_add(skb, family, &skp->smk_netlabel);
+                       netlbl_cache_add(skb, family, &skp->smk_netlabel);
        }
 
        netlbl_secattr_destroy(&secattr);
-- 
1.8.3.1