message: graphene: pass by reference in loop
diff: @@ -495,7 +495,7 @@ bool CGrapheneBlock::process(CNode *pfrom,
  localHashes.push_back(kv.second);
  // Add full transactions included in the block
  - for (auto tx : vAdditionalTxs)
  + for (auto &tx : vAdditionalTxs)
  localHashes.push_back(tx->GetHash());
  try
  