Cannot cancel changing SSH passphrase in seahorse

[Josh Langsfeld]

Problem: If a user starts the changing passphrase process in seahorse, but clicks cancel after entering the current passphrase, the passphrase is changed to be empty.

Expected: Clicking cancel when prompted to enter a new passphrase should result in no change to the current passphrase.

Steps to reproduce:
  - User has SSH key with nonempty passphrase
  - Launch seahorse, navigate to SSH key properties, select "Change Passphrase"
  - Enter current passphrase
  - Click "Cancel" button twice

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: seahorse 3.18.0-2ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
Uname: Linux 4.4.0-38-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Sep 27 11:52:12 2016
ExecutablePath: /usr/bin/seahorse
InstallationDate: Installed on 2016-09-23 (3 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
ProcEnviron:
 PATH=(custom, user)
 SHELL=/usr/bin/fish
 LANG=en_US.UTF-8
 LANGUAGE=en_US
 XDG_RUNTIME_DIR=<set>
SourcePackage: seahorse
UpgradeStatus: No upgrade log present (probably fresh install)