`make index` broken

[Shawn Webb]

I'm on 11-current/amd64. I'm not sure if it's specific to me, but it looks
like a change to the net/openbgpd port is causing `make index` to fail with
the following error message:

make[5]: Unknown modifier ')'
make[5]: Unclosed variable specification (expecting '}') for "PORT_OPTIONS"
(value "") modifier )
make[5]: "/usr/ports/net/openbgpd/Makefile" line 31: Malformed conditional
(${PORT_OPTIONS:MIPV6LLPEER))
make[5]: Fatal errors encountered -- cannot continue===> net/openbgpd failed
*** [describe.net] Error code 1

Thanks,

Shawn