dirty.sh: silently exit 0 when run from within VSCode

[goneri]

Ignore dirty.sh outcomes when it's called from within VSCode.

[manstis]

LGTM 👍

I couldn't find much about the magic environment variable VSCODE_INJECTION.

What I did find suggests it does what your code suggests it does 😸

[goneri]

LGTM 👍

I couldn't find much about the magic environment variable VSCODE_INJECTION.

What I did find suggests it does what your code suggests it does 😸

I picked the first variable that sounded reasonably safe :-).