Show 'Done' always for 'Building dependency tree'

For years I subconsciously thought this is wrong but ignored it: $ LANG=C apt install -s Reading package lists... Done Building dependency tree Reading state information... Done

Then I noticed: $ LANG=C apt install -s -o dir::state::extended_states=/dev/null Reading package lists... Done Building dependency tree... Done

That can't be! Then it really should be: $ LANG=C apt install -s Reading package lists... Done Building dependency tree... Done Reading state information... Done

This oddity seems to be in since the introduction of the auto bit in 2005 which makes this rather hard to solve in theory, but in practice no front end seems to call the readStateFile method directly, so we might actually be lucky.

The alternative would be to call Done in the calling method and again at the end of readStateFile while dropping it from the current place, but as that is more shuffling around it could be more upsetting for other front ends. Not sure, but now that I have seen it, I want to have it fixed one way or another… aptitude at least seems not to explode.

References: afb1e2e3