File _link of Package postfix.openSUSE_Leap_15.1_Update

<link project="openSUSE:Leap:15.1:Update" package="postfix" rev="2cf399c64d7f110133235be312d82734" vrev="2.4" baserev="2cf399c64d7f110133235be312d82734">
  <patches>
    <branch></branch>
  </patches>
</link>