[Koha-devel] Why in the OPAC v3 code are reserves limited to items with an itemtype set

I'm looking that the latest code for opac-reserve.pl and around line 143 the item list is limited to only those items that have an itemtype set, either in the biblioitems or items table depending on the syspref. I would like to know why this is when it is possible to have a record with no itemtype set. It is possible to have no itemtype set when staging/importing records, and additem.pl leaves the option of no itemtype when the syspref is set and that field is visible. So, why is it necessary in opac-reserve.pl to have an itemtype when it is possible that an itemtype will not be set. That is my question. I might think of this as a bug, and would prefer that all items be listed regardless of whether there is an itemtype set. Thanks.