message: Simplification of code
diff: @@ -879,11 +879,8 @@ WalletModel::SendCoinsReturn WalletModel::prepareSigmaSpendTransaction(
  } catch (const InsufficientFunds& err) {
  return AmountExceedsBalance;
  } catch (const std::runtime_error& err) {
  - if (0 == std::strcmp(
  - err.what(),
  - std::runtime_error(_("Can not choose coins within limit.")).what())) {
  + if (_("Can not choose coins within limit.") == err.what())
  return ExceedLimit;
  - }
  throw err;
  } catch (const std::invalid_argument& err) {
  return ExceedLimit;
  