selinux: fix memory leak in netlabel code

Fix a memory leak in security_netlbl_sid_to_secattr() as reported here:
 * https://bugzilla.redhat.com/show_bug.cgi?id=352281

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: James Morris <jmorris@namei.org>

security/selinux/ss/services.c

@@ -2606,8 +2606,6 @@ int security_netlbl_sid_to_secattr(u32 sid, struct netlbl_lsm_secattr *secattr)
 	int rc = -ENOENT;
 	struct context *ctx;
 
-	netlbl_secattr_init(secattr);
-
 	if (!ss_initialized)
 		return 0;