* master:
  go/neo/neonet: errgroup -> xsync.WorkGroup

See go123@515a6d14

See go123@515a6d14

- without registering M to tracer it was failing as

  BenchmarkGetObjectNetPipe
      neo_test.go:491: main: expect: *neo.eventMStartReady:
          want: &{m true}
          have: &{ true}
          diff:  {
          - Where: "m",
          + Where: "",
            Ready: true,
           }

- Client is now required to be explicitly Run, but I forgot to update
  thi function in eae3b427.