security/smack: Use AF_INET for sin_family field

Author: Julia Lawall <julia@diku.dk>

Elsewhere the sin_family field holds a value with a name of the form
AF_..., so it seems reasonable to do so here as well.  Also the values of
PF_INET and AF_INET are the same.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// 
@@
struct sockaddr_in sip;
@@

(
sip.sin_family ==
- PF_INET
+ AF_INET
|
sip.sin_family !=
- PF_INET
+ AF_INET
|
sip.sin_family =
- PF_INET
+ AF_INET
)
// 

Signed-off-by: Julia Lawall 
Acked-by: Casey Schaufler 
Signed-off-by: James Morris 
---
 security/smack/smack_lsm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 1c9bdbc..c243a2b 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -2464,7 +2464,7 @@ static int smack_socket_sendmsg(struct socket *sock, struct msghdr *msg,
 	/*
 	 * Perfectly reasonable for this to be NULL
 	 */
-	if (sip == NULL || sip->sin_family != PF_INET)
+	if (sip == NULL || sip->sin_family != AF_INET)
 		return 0;
 
 	return smack_netlabel_send(sock->sk, sip);