message: Fix txn_test_gen's nonce generation (again)
diff: @@ -249,12 +249,12 @@ struct txn_test_gen_plugin_impl {
  static uint64_t nonce = static_cast<uint64_t>(fc::time_point::now().sec_since_epoch()) << 32;
  abi_serializer eosio_serializer(cc.get_database().find<account_object, by_name>(config::system_account_name)->get_abi());
  - variant nonce_vo = fc::mutable_variant_object()
  - ("value", fc::to_string(nonce++));
  for(unsigned int i = 0; i < batch; ++i) {
  {
  + variant nonce_vo = fc::mutable_variant_object()
  + ("value", fc::to_string(nonce++));
  signed_transaction trx;
  trx.actions.push_back(act_a_to_b);
  trx.context_free_actions.emplace_back(action({}, config::system_account_name, "nonce", eosio_serializer.variant_to_binary("nonce", nonce_vo)));
  @@ -266,6 +266,8 @@ struct txn_test_gen_plugin_impl {
  }
  {
  + variant nonce_vo = fc::mutable_variant_object()
  + ("value", fc::to_string(nonce++));
  signed_transaction trx;
  trx.actions.push_back(act_b_to_a);
  trx.context_free_actions.emplace_back(action({}, config::system_account_name, "nonce", eosio_serializer.variant_to_binary("nonce", nonce_vo)));
  