Bug#989496: apt-listchanges: Error output if choosing to not continue after reading list of changes

[Tia <tia3100@protonmail.com>]

Package: apt-listchanges
Version: 3.24
Severity: normal
X-Debbugs-Cc: tia3100@protonmail.com

Dear Maintainer,

After reading list of changes decided not to upgrade, so chose 'n' when
asked. As such apt-listchanges aborted as it should, only issue is that
after that it would output error message

Retrieving bug reports... Done
Parsing Found/Fixed information... Done
Reading changelogs... Done
apt-listchanges: Do you want to continue? [Y/n] n
apt-listchanges: Aborting
E: Sub-process /usr/bin/apt-listchanges --apt || test $? -lt 10 returned an error code (1)
E: Failure running script /usr/bin/apt-listchanges --apt || test $? -lt 10

There is no issues in functionality after that if run again.


-- Package-specific info:
==> /etc/apt/listchanges.conf <==
[apt]
frontend=pager
which=both
email_address=root
email_format=text
confirm=true
headers=true
reverse=false
save_seen=/var/lib/apt/listchanges.db

-- System Information:
Debian Release: 11.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-7-amd64 (SMP w/4 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages apt-listchanges depends on:
ii  apt                    2.2.3
ii  debconf [debconf-2.0]  1.5.75
ii  python3                3.9.2-3
ii  python3-apt            2.2.0
ii  python3-debconf        1.5.75
ii  sensible-utils         0.0.14
ii  ucf                    3.0043

apt-listchanges recommends no packages.

Versions of packages apt-listchanges suggests:
ii  exim4-daemon-light [mail-transport-agent]  4.94.2-5
ii  firefox-esr [www-browser]                  78.10.0esr-1
ii  konqueror [www-browser]                    4:20.12.0-4
ii  konsole [x-terminal-emulator]              4:20.12.3-1
ii  python3-gi                                 3.38.0-2
ii  termit [x-terminal-emulator]               3.1-1
ii  xterm [x-terminal-emulator]                366-1

-- debconf information:
  apt-listchanges/save-seen: true
  apt-listchanges/no-network: false
  apt-listchanges/frontend: pager
  apt-listchanges/headers: false
  apt-listchanges/reverse: false
  apt-listchanges/confirm: false
  apt-listchanges/email-address: root
  apt-listchanges/email-format: text
  apt-listchanges/which: news