message: refactor: Avoid locking cs_main in ProcessNewBlockHeaders
diff: @@ -3402,7 +3402,6 @@ bool ProcessNewBlockHeaders(const std::vector<CBlockHeader>& headers, CValidatio
  }
  }
  if (NotifyHeaderTip()) {
  - LOCK(cs_main);
  if (::ChainstateActive().IsInitialBlockDownload() && ppindex && *ppindex) {
  LogPrintf("Synchronizing blockheaders, height: %d (~%.2f%%)\n", (*ppindex)->nHeight, 100.0/((*ppindex)->nHeight+(GetAdjustedTime() - (*ppindex)->GetBlockTime()) / Params().GetConsensus().nPowTargetSpacing) * (*ppindex)->nHeight);
  }
  