Bug 22130: Correct parameter to get authorized value description.

Bug 22130: Correct parameter to get authorized value description.

This patch corrects the error that shows an authorized value instead of the obvious description of the document status.

TEST PLAN
1) In Koha administration, search "BatchCheckouts".
2) Make sure "BatchCheckouts" is set at "Allow".
3) Make sure "BatchCheckoutsValidCategories" contains at least one patron category.
5) Copy the barcode of an item and change the status document so it cannot be loaned.
4) Choose a patron which belongs to the patron category at 3).
(their account should not be expired and they should not have active fees preferably)
5) Go to the patron details page.
6) Click on "Batch check out".
7) Enter the item barcode.
8) Notice a number is in brackets under the column "Information".
9) Apply patch.
10) Notice the status description has replaced the number.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>