Bug 24446: (QA follow-up) Use 'receive' method in ModReserveAffect

ModeReserveAffect was setting all transfers in the queue to received by
looping through a resultset. This patch updates the logic to try and
catch the in_transit transfer and receive just that one instead.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

C4/Reserves.pm

@@ -1200,16 +1200,11 @@ sub ModReserveAffect {
     } else {
         $hold->set_waiting($desk_id);
         _koha_notify_reserve( $hold->reserve_id ) unless $already_on_shelf;
-        my $transfers = Koha::Item::Transfers->search({
-            itemnumber => $itemnumber,
-            datearrived => undef
-        });
-        while( my $transfer = $transfers->next ){
-            $transfer->datearrived( dt_from_string() )->store;
-        };
+        # Complete transfer if one exists
+        my $transfer = $hold->item->get_transfer;
+        $transfer->receive if $transfer;
     }
 
-
     _FixPriority( { biblionumber => $biblionumber } );
     my $item = Koha::Items->find($itemnumber);
     if ( $item->location && $item->location eq 'CART'