Unified 'exit' as 'sys.exit' in the code to improve cross platform compatibility

[fcwys]

Unified exit as sys. exit in the code to improve cross platform compatibility,due to the special working environment, it is not possible to install mycli using pip. When using pyinstaller to package as binary, the exit error in main.py is reported. After modifying it to sys. exit, it works normally. Test commands such as mycli.exe -uroot -proot -e "select version();"

[amjith]

No objections to this proposal. Could you send a PR with this change?

[fcwys]

#1187

[HossamSaberX]

Greetings!
May i know how did you manage to traverse the codebase to spot the issue's code lines?

[fcwys]

I checked this manually because I used pyinstaller to package the binary run save and found problems in "main.py".