libgdm.so.4

[starikarp at yandex.com]

Hi!

On my FreeBSD-11.2-RELEASE (amd64) when I run portmaster
--check-dependencies or pkg check -d -a I got:

serf is missing a required shared library: libgdbm.so.4

I have installed and reinstalled databases/gdbm and I am using just
ports.

Thank you.

SK