File _link of Package proftpd.openSUSE_Leap_15.1_Update

<link project="openSUSE:Leap:15.1:Update" package="proftpd" rev="c093586af8c28a2d2c3947a5daab7f17" vrev="3.10" baserev="c093586af8c28a2d2c3947a5daab7f17">
  <patches>
    <branch></branch>
  </patches>
</link>