test/distributor: fix flush with worker shutdown

On restarting worker 0 after shutdown, packets handled by
worker 0 must be incremented only when a packet is received by
it.

Fixes: c3eabff124e6 ("distributor: add unit tests")
Cc: stable@dpdk.org

Signed-off-by: Harman Kalra <hkalra@marvell.com>
Acked-by: David Hunt <david.hunt@intel.com>

app/test/test_distributor.c

@@ -375,7 +375,8 @@ handle_work_for_shutdown_test(void *arg)
 				id, buf, buf, num);
 
 		while (!quit) {
-			worker_stats[id].handled_packets++, count++;
+			worker_stats[id].handled_packets += num;
+			count += num;
 			rte_pktmbuf_free(pkt);
 			num = rte_distributor_get_pkt(d, id, buf, buf, num);
 		}