Fix WPS UPnP SSDP on 32-bit targets

The memcpy was using incorrect size (of pointer; should have been of
data structure) for the client address. This ended up working on 64-bit
targets, but left part of the address uninitialized on 32-bit targets.

src/wps/wps_upnp_ssdp.c

@@ -461,7 +461,7 @@ static void msearchreply_state_machine_start(struct upnp_wps_device_sm *sm,
 	a->type = MSEARCH_REPLY;
 	a->state = 0;
 	a->sm = sm;
-	os_memcpy(&a->client, client, sizeof(client));
+	os_memcpy(&a->client, client, sizeof(*client));
 	/* Wait time depending on MX value */
 	next_timeout_msec = (1000 * mx * (os_random() & 0xFF)) >> 8;
 	next_timeout_sec = next_timeout_msec / 1000;