Commit 81f92f1fe introduced a selective update mechanism to
_accounts_save() to prevent overwrites when running multiple instances
by only modifying the specific account being saved.
Commit 5c484c fixed a problem with that commit regarding empty accounts.
It turns there was another bug introduced:
The new implementation only set the keys that existed in memory.
So removal of keys was not possible anymore.
Fixes: 81f92f1fed
Ref: 5c484c26ed
Signed-off-by: Michael Vetter <jubalh@iodoru.org>
8675f7be0c