cfg is loaded from prefs and already holds the existing, already-encrypted
password. When the edit form was re-submitted without re-typing the
password, the elif branch called encrypt() on that stored ciphertext,
compounding the encryption on every save and eventually breaking sync with
a decrypt error.
Drop the elif branch: the stored value is preserved as-is, and we only
encrypt when a new password is actually supplied.
Fixes#1915
Co-authored-by: EkaTantra Dev <dev@ekatantra.com>
c58cb067f2