Fix incorrect validation logic (thanks @ishidawataru)
Fix incorrect validation logic (thanks @ishidawataru)

j-kato/gobgp,fujita/gobgp,Dipsingh/gobgp,fujita/gobgp,a16/gobgp,Dipsingh/gobgp,ishidawataru/gobgp,a16/gobgp,ishidawataru/gobgp,osrg/gobgp,a16/gobgp,a16/gobgp,osrg/gobgp,a16/gobgp,tamihiro/gobgp,fujita/gobgp,fujita/gobgp,j-kato/gobgp,Dipsingh/gobgp,osrg/gobgp,tamihiro/gobgp,j-kato/gobgp,tamihiro/gobgp,a16/gobgp,tamihiro/gobgp,ishidawataru/gobgp,a16/gobgp,osrg/gobgp