Fix for beta version applied twice to $DIM_VERSION
Fix for beta version applied twice to $DIM_VERSION

Fixes #602

chrisfried/DIM,LouisFettet/DIM,bhollis/DIM,bhollis/DIM,bhollis/DIM,chrisfried/DIM,delphiactual/DIM,LouisFettet/DIM,48klocs/DIM,delphiactual/DIM,48klocs/DIM,DestinyItemManager/DIM,chrisfried/DIM,DestinyItemManager/DIM,delphiactual/DIM,48klocs/DIM,DestinyItemManager/DIM,bhollis/DIM,chrisfried/DIM,DestinyItemManager/DIM,delphiactual/DIM