Code review comment for lp:~noizyland/duplicity/fix-progress

Apologies for my delay in looking at this (which Kenneth has now already merged).

With this (merged) change, the test for the bug now passes, so I have separately suggested re-enabling that test:
https://code.launchpad.net/~aaron-whitehouse/duplicity/reactivate_progress_test/+merge/263732

Thanks for sorting.