bugfix: fix an incorrect call to delete_if_expired
bugfix: fix an incorrect call to delete_if_expired

This could result in tag commit transactions being aborted if gc runs during the transactions and deletes the partial files.

oldmantaiter/disco,discoproject/disco,discoproject/disco,scrapinghub/disco,seabirdzh/disco,mozilla/disco,oldmantaiter/disco,ErikDubbelboer/disco,ktkt2009/disco,mozilla/disco,scrapinghub/disco,pooya/disco,pombredanne/disco,oldmantaiter/disco,pooya/disco,simudream/disco,discoproject/disco,mwilliams3/disco,beni55/disco,beni55/disco,simudream/disco,beni55/disco,mozilla/disco,seabirdzh/disco,pooya/disco,ErikDubbelboer/disco,ErikDubbelboer/disco,scrapinghub/disco,simudream/disco,mwilliams3/disco,simudream/disco,beni55/disco,beni55/disco,ktkt2009/disco,oldmantaiter/disco,pombredanne/disco,mwilliams3/disco,pombredanne/disco,ErikDubbelboer/disco,simudream/disco,oldmantaiter/disco,pombredanne/disco,pombredanne/disco,ktkt2009/disco,pavlobaron/disco_playground,ktkt2009/disco,mwilliams3/disco,ErikDubbelboer/disco,pooya/disco,seabirdzh/disco,ktkt2009/disco,pavlobaron/disco_playground,scrapinghub/disco,pavlobaron/disco_playground,discoproject/disco,seabirdzh/disco,pavlobaron/disco_playground,discoproject/disco,seabirdzh/disco,mozilla/disco,mwilliams3/disco