message: Fix addUpStackables
diff: @@ -240,7 +240,7 @@ function limitToBucketSize(items: DimItem[], isVault) {
  // https://github.com/DestinyItemManager/DIM/issues/2691#issuecomment-373970255
  function addUpStackables(items: DimItem[]) {
  return flatMap(Object.values(_.groupBy(items, (t) => t.hash)), (items) => {
  - if (items[0].maxStackSize > 0) {
  + if (items[0].maxStackSize > 1) {
  const item = copy(items[0]);
  item.amount = sum(items, (i) => i.amount);
  return [item];
  