security/openvpn-auth-ldap-2.0.4 not compatible with security/openvpn-2.5.0

[Nikita Druba]

 > Updating how?
 From ports by portmaster.
 > This suggests you need to update/rebuild lang/libobjc2 dependency as 
well.
After rebuilding lang/libobjc2, openvpn works. Thank you.