Applied fix from trunk for revision: 1603439 
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Applied fix for OFBIZ-5622: during invoicing, only one ShipmentItemBilling was created for the first InvoiceItem.
Thanks to Christian Geisert for the fix.



git-svn-id: https://svn.apache.org/repos/asf/ofbiz/branches/release13.07@1603445 13f79535-47bb-0310-9956-ffa450edef68