message: op-batcher: Fix channelManager.nextTxData, always prepend 0
diff: @@ -172,12 +172,10 @@ func (s *channelManager) nextTxData() ([]byte, txID, error) {
  }
  id, data := s.pendingChannel.NextFrame()
  - if id.frameNumber == 0 {
  - // prepend version byte for first frame
  + // prepend version byte for first frame of transaction
  // TODO: more memory efficient solution; shouldn't be responsibility of
  // channelBuilder though.
  data = append([]byte{0}, data...)
  - }
  s.log.Trace("returning next tx data", "id", id)
  s.pendingTransactions[id] = data
  