Security: Fix coding style in security/

Fix coding style in security/

Signed-off-by: Zhitong Wang <zhitong.wangzt@alibaba-inc.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/selinux/ss/mls.c b/security/selinux/ss/mls.c
index 372b773..b4eff7a 100644
--- a/security/selinux/ss/mls.c
+++ b/security/selinux/ss/mls.c
@@ -255,7 +255,7 @@
 
 	if (!pol->mls_enabled) {
 		if (def_sid != SECSID_NULL && oldc)
-			*scontext += strlen(*scontext)+1;
+			*scontext += strlen(*scontext) + 1;
 		return 0;
 	}