message: fix(core): fix getExtraPrebuildParams
  fix getExtraPrebuildParams for TRX coin, contractCalls weren't building correctly
  stlx-4989
diff: @@ -318,9 +318,9 @@ export class Trx extends BaseCoin {
  * @param callback
  */
  getExtraPrebuildParams(buildParams: any, callback?: NodeCallback<any>): Bluebird<any> {
  - const recipients: any[] = [{}];
  return co<any>(function* () {
  if (buildParams.recipients[0].data && buildParams.feeLimit) {
  + const recipients: any[] = [{ ...buildParams.recipients[0] }];
  recipients[0].feeLimit = buildParams.feeLimit;
  return {
  recipients,
  