[NETFILTER]: xt_tcpudp: fix wrong struct in udp_checkentry

It doesn't seem to have any effect on the x86 architecture but it does
have effect on the Axis CRIS architecture.
Signed-off-by: Jesper Bengtsson <jesper.bengtsson@axis.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/netfilter/xt_tcpudp.c

@@ -188,7 +188,7 @@ udp_checkentry(const char *tablename,
 	       void *matchinfo,
 	       unsigned int hook_mask)
 {
-	const struct xt_tcp *udpinfo = matchinfo;
+	const struct xt_udp *udpinfo = matchinfo;
 
 	/* Must specify no unknown invflags */
 	return !(udpinfo->invflags & ~XT_UDP_INV_MASK);