netfilter: Use unsigned types for hooknum and pf vars

and (try to) consistently use u_int8_t for the L3 family.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/net/netfilter/nf_conntrack_h323_main.c b/net/netfilter/nf_conntrack_h323_main.c
index 2f83c15..5dc0478 100644
--- a/net/netfilter/nf_conntrack_h323_main.c
+++ b/net/netfilter/nf_conntrack_h323_main.c
@@ -709,7 +709,8 @@
 /* If the calling party is on the same side of the forward-to party,
  * we don't need to track the second call */
 static int callforward_do_filter(const union nf_inet_addr *src,
-                                 const union nf_inet_addr *dst, int family)
+				 const union nf_inet_addr *dst,
+				 u_int8_t family)
 {
 	const struct nf_afinfo *afinfo;
 	struct flowi fl1, fl2;