File _link of Package virtualbox.openSUSE_Leap_15.4_Update

<link project="openSUSE:Leap:15.4:Update" package="virtualbox" rev="70a54902dda3df2754d233fb3d625377" vrev="2.16" baserev="70a54902dda3df2754d233fb3d625377">
  <patches>
    <branch></branch>
  </patches>
</link>