Cannot remove AFP share password once set
As a result of various changes to the AFP Share password field handling, it is no longer possible to remove a share password once set. Editing a share with one set presents a blank field, and clicking OK does not remove it.
See r8013 for the latest commit and ticket #837 for some history.
1. Create AFP share, set volume password.
2. Restart AFP, test that volume password is checked for and accepted on client.
3. Edit AFP share, click OK without changing anything (since the Share Password field is blank).
4. Restart AFP, test that volume password is still being prompted for. Verify that old password is still valid.