collapse_channel.py: hook_signal(hotlist_changed) fixed.

[weechatter]

Script info

• Script name: collapse_channel
• Version: 1.3

• Requirements: 

• Min WeeChat version: 

• Script tags: 

Description

Checklist (new script)

• [ ] Single commit, single file added
• [ ] Commit message: New script name.py: short description…
• [ ] No similar script already exists
• [ ] Name: max 32 chars, only lower case letters, digits and underscores
• [ ] Unique name, does not already exist in repository
• [ ] No shebang on the first line
• [ ] Comment in script with name/pseudo, e-mail and license
• [ ] Only English in code/comments
• [ ] Pure WeeChat API used, no extra API
• [ ] Function hook_process is used for any blocking call
• [ ] For Python script: works with Python 3 (Python 2 support is optional)
• [ ] Score 100 / 100 displayed by weechat-script-lint

Checklist (script update)

• [ ] Author has been contacted
• [ ] Single commit, single file added
• [ ] Commit message format: script_name.py X.Y: …
• [ ] Script version and Changelog have been updated
• [ ] For Python script: works with Python 3 (Python 2 support is optional)
• [ ] Score 100 / 100 displayed by weechat-script-lint

Checklist (script deletion)

• [ ] Author has been contacted
• [ ] Single commit, single file deleted
• [ ] Commit message format: Remove script name.py with reasons in description

[flashcode]

Thanks, merged!