tlf_journal: wait for previous work before pausing
tlf_journal: wait for previous work before pausing

Otherwise that goroutine might pick up new work sent after the pause.

keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client