GH-588 Remove +1 to number of blocks latency calculation. With it 0 l…

…atency indicates 1 block latency.

plugins/net_plugin/net_plugin.cpp

@@ -1788,8 +1788,8 @@ namespace eosio {
       }
       // number of blocks syncing node is behind from a peer node
       uint32_t nblk_behind_by_net_latency = static_cast<uint32_t>(network_latency_ns / block_interval_ns);
-      // 2x for time it takes for message to reach back to peer node, +1 to compensate for integer division truncation
-      uint32_t nblk_combined_latency = 2 * nblk_behind_by_net_latency + 1;
+      // 2x for time it takes for message to reach back to peer node
+      uint32_t nblk_combined_latency = 2 * nblk_behind_by_net_latency;
       // message in the log below is used in p2p_high_latency_test.py test
       peer_dlog(c, "Network latency is ${lat}ms, ${num} blocks discrepancy by network latency, ${tot_num} blocks discrepancy expected once message received",
                 ("lat", network_latency_ns/1000000)("num", nblk_behind_by_net_latency)("tot_num", nblk_combined_latency));