message: Don't call the service with no items.
diff: @@ -63,6 +63,11 @@ class D2BulkFetcher {
  const vendorDtrItems = this._itemListBuilder.getVendorItemList(this._reviewDataCache, vendorSaleItems, vendorItems);
  + if (!vendorDtrItems.length) {
  + const emptyVotes: DtrBulkItem[] = [];
  + return $q.resolve(emptyVotes);
  + }
  +
  const promise = $q
  .when(this._getBulkWeaponDataEndpointPost(vendorDtrItems, platformSelection))
  .then($http)
  