selinux: use identical iterator type in hashtab_duplicate()

Use the identical type u32 for the loop iterator.
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
[PM: remove extra whitespace in subject]
Signed-off-by: Paul Moore <paul@paul-moore.com>

security/selinux/ss/hashtab.c

@@ -138,7 +138,8 @@ int hashtab_duplicate(struct hashtab *new, struct hashtab *orig,
 		void *args)
 {
 	struct hashtab_node *cur, *tmp, *tail;
-	int i, rc;
+	u32 i;
+	int rc;
 
 	memset(new, 0, sizeof(*new));