Bug 11801: In transit hold items incorrectly labels as "Waiting to be pulled" on request.pl

If an item needs to be transferred to fill a hold, the hold will be
listed as 'Waiting to be pulled" while it is in transit.

Test Plan:
1) Place a hold for pickup at another library
2) Check in the item, confirm the hold transfer
3) View the holds for that record ( request.pl )
4) Note the priority is "In transit" and the status is 'Waiting to be
   pulled".
5) Apply this patch
6) Reload the holds page
7) Note the status is now "Item being transferred to $branch"

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>