fix: redundant keys and non-closed channel (#34)

* fix: redundant keys and non-closed channel

* revert line to its original state

cmd/geth/converkle.go

@@ -350,11 +350,19 @@ func convertToVerkle(ctx *cli.Context) error {
  values[slotkey[31]] = value[:]
  continue
  }
- kvCh <- &group{laststem, values[:]}
+
+ // flush the previous group, iff it's not the header group
+ if !bytes.Equal(stem[:31], laststem[:]) {
+ kvCh <- &group{stem: laststem, values: values[:]}
+ }
+
+ values = make([][]byte, 256)
+ values[slotkey[31]] = value[:]
+ copy(laststem[:], slotkey[:31])
  }
 
  // commit the last group if it's not the header group
- if !bytes.Equal(laststem[:31], stem) {
+ if !bytes.Equal(laststem[:31], stem[:31]) {
  kvCh <- &group{laststem, values[:]}
  }
  }
@@ -541,6 +549,7 @@ func doInsertion(ctx *cli.Context) error {
  if err := readDataDump(itemCh, abortCh); err != nil {
  log.Error("Error reading data", "err", err)
  }
+ close(itemCh)
  }()
  defer close(abortCh)