Fix cleanup indexing.

prrt/proto/stores/packetDeliveryStore.c

@@ -176,9 +176,9 @@ void PrrtPacketDeliveryStore_cleanup(PrrtPacketDeliveryStore *store, prrtTimesta
         BPTree_get_range(store->tree, packetList, now + TIMESTAMP_SPACE/2, TIMESTAMP_SPACE);
     }
     while (List_count(packetList) > 0) {
-        PrrtPacket *block = List_shift(packetList);
-        store->tree = BPTree_delete(store->tree, block->sequenceNumber);
-        PrrtPacket_destroy(block);
+        PrrtPacket *packet = List_shift(packetList);
+        store->tree = BPTree_delete(store->tree, PrrtDataPacket_packet_timeout(packet));
+        PrrtPacket_destroy(packet);
     }
     List_destroy(packetList);
     check(pthread_mutex_unlock(&store->lock) == EXIT_SUCCESS, "Unlock failed.");