0002615: Run and Rerun. voiding an allocated currency invoice doesn't clear FX account
http://devel.frontaccounting.com/git/?p=fa-stable.git;a=commit;h=5ea4d80a91017eadba9db43a0f26242c57bc4c9e
http://devel.frontaccounting.com/git/?p=fa-stable.git;a=commit;h=8d564a2cbca92c71738d933813ac4985e15488e4