message: Print mempool size in KB when adding txn
  backports bitcoin@e6c7b362ab8915e2aac167fa519bd29836d482af
diff: @@ -5676,10 +5676,9 @@ bool static ProcessMessage(CNode* pfrom, std::string strCommand, CDataStream& vR
  RelayTransaction(tx);
  vWorkQueue.push_back(inv.hash);
  - LogPrint(BCLog::MEMPOOL, "AcceptToMemoryPool: peer=%d %s : accepted %s (poolsz %u)\n",
  - pfrom->id, pfrom->cleanSubVer,
  - tx.GetHash().ToString(),
  - mempool.size());
  + LogPrint(BCLog::MEMPOOL, "%s : peer=%d %s : accepted %s (poolsz %u txn, %u kB)\n",
  + __func__, pfrom->id, pfrom->cleanSubVer, tx.GetHash().ToString(),
  + mempool.size(), mempool.DynamicMemoryUsage() / 1000);
  // Recursively process any orphan transactions that depended on this one
  std::set<NodeId> setMisbehaving;
  