message: Optimize AddToAnonBlockStats()
diff: @@ -960,12 +960,13 @@ void CWallet::AddToAnonBlockStats(const std::map<int64_t, CAnonBlockStat>& mapAn
  if(!nBlockHeight)
  return;
  - for (const auto & [nValue, anonBlockStat] : mapAnonBlockStat)
  + for (const auto & [nValue, newAnonBlockStat] : mapAnonBlockStat)
  {
  - mapAnonBlockStats[nBlockHeight][nValue].nSpends += anonBlockStat.nSpends;
  - mapAnonBlockStats[nBlockHeight][nValue].nOutputs += anonBlockStat.nOutputs;
  - mapAnonBlockStats[nBlockHeight][nValue].nStakingOutputs += anonBlockStat.nStakingOutputs;
  - mapAnonBlockStats[nBlockHeight][nValue].nCompromisedOutputs += anonBlockStat.nCompromisedOutputs;
  + CAnonBlockStat& anonBlockStat = mapAnonBlockStats[nBlockHeight][nValue];
  + anonBlockStat.nSpends += newAnonBlockStat.nSpends;
  + anonBlockStat.nOutputs += newAnonBlockStat.nOutputs;
  + anonBlockStat.nStakingOutputs += newAnonBlockStat.nStakingOutputs;
  + anonBlockStat.nCompromisedOutputs += newAnonBlockStat.nCompromisedOutputs;
  }
  }
  