[NETFILTER]: nf_nat_h323: call set_h225_addr instead of set_h225_addr_hook

They're the same.

Signed-off-by: Jing Min Zhao <zhaojingmin@vivecode.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>