This pull request updates the ufw-cloudflare.bash script to improve its error handling and resource cleanup. The main change is to ensure that temporary files are properly removed when the script exits due to errors or insufficient privileges by replacing direct calls to exit 1 with the clean_exit 1 function. Additionally, the error trap handler function has been renamed for clarity.

Error handling and cleanup improvements:

• Replaced all instances of exit 1 with clean_exit 1 to ensure temporary files are removed on exit, improving script reliability and cleanup. (hardening/UFW Cloudflare/ufw-cloudflare.bash, hardening/UFW Cloudflare/CHANGELOG.md) [1] [2]
• Renamed the error trap handler function from on_err to on_error for better clarity and consistency, and updated the corresponding trap. (hardening/UFW Cloudflare/ufw-cloudflare.bash)

Other:

• Updated the script version from v1.0.3 to v1.0.4. (hardening/UFW Cloudflare/ufw-cloudflare.bash)