isdn: remove extra byteswap in isdn_net_ciscohdlck_slarp_send_reply

commit a144ea4b7a13087081ab5402fa9ad0bcfd249e67 [IPV4]: annotate struct in_ifaddr

Missed this extra byteswap as the isdn inlines hide the htonl inside
put_u32 which causes an extra byteswap on little-endian arches.

Signed-off-by: Harvey Harrison <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/isdn/i4l/isdn_net.c

···
 	/* slarp reply, send own ip/netmask; if values are nonsense remote
 	 * should think we are unable to provide it with an address via SLARP */
 	p += put_u32(p, CISCO_SLARP_REPLY);
-	p += put_u32(p, addr);	// address
-	p += put_u32(p, mask);	// netmask
+	*(__be32 *)p = addr;	// address
+	p += 4;
+	*(__be32 *)p = mask;	// netmask
+	p += 4;
 	p += put_u16(p, 0);	// unused
 
 	isdn_net_write_super(lp, skb);