Staging: batman-adv: send.c: Checkpatch cleanup

drivers/staging/batman-adv/send.c:137: CHECK: multiple assignments should be avoided
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/batman-adv/send.c

@@ -134,7 +134,8 @@ static void send_packet_to_if(struct forw_packet *forw_packet,
 	if (batman_if->if_active != IF_ACTIVE)
 		return;
 
-	packet_num = buff_pos = 0;
+	packet_num = 0;
+	buff_pos = 0;
 	batman_packet = (struct batman_packet *)
 		(forw_packet->packet_buff);