devel/flexdock beeps during javadoc build

[Rob Farmer]

The port devel/flexdock beeps the system speaker about 15-20 times
during the javadoc part of the build. This port builds with ant. Any
idea how to stop this? Google isn't turning up much.

If you already have the jdk installed this port only takes about a
minute to build, so if someone could take a look it would be
appreciated.

Thanks,
-- 
Rob Farmer