fix: templ CLI panic with --proxy option

[eussam]

fixes #358

[tantalic]

Watching this one in hopes it resolves an issue we are having 🤞

[a-h]

Thanks for that!

[eussam]

Thank you for giving me the opportunity to contribute @a-h 😃
Out of curiosity, could you tell me why you preferred not to have the inline function ?

[a-h]

Only reason was so that the functionality can be followed by reading from top to bottom, rather than reading the function, and holding it in your mind until you see where and how it's used.

It was clear, but I thought it could be a tiny bit more direct without having the function variable.