[Model][Performance] Double index call locking cs_wallet and cs_main …

…twice for every single record fix.

src/qt/transactiontablemodel.cpp

@@ -792,7 +792,7 @@ QModelIndex TransactionTableModel::index(int row, int column, const QModelIndex&
  Q_UNUSED(parent);
  TransactionRecord* data = priv->index(row);
  if (data) {
- return createIndex(row, column, priv->index(row));
+ return createIndex(row, column, data);
  }
  return QModelIndex();
 }