message: Resync mintpool on rescanzerocoinwallet rpc.
diff: @@ -406,7 +406,9 @@ UniValue listmintedzerocoins(const JSONRPCRequest& request)
  EnsureWalletIsUnlocked(pwallet);
  - // WalletBatch walletdb(pwallet->GetDBHandle());
  + auto zwallet = pwallet->GetZWallet();
  + zwallet->SyncWithChain(false);
  +
  set<CMintMeta> setMints = pwallet->ListMints(true, fMatureOnly, true);
  int nBestHeight = chainActive.Height();
  