[llvm] [llvm-lit] Resolve env subcommand required error (PR #98414)

[James Henderson via llvm-commits]

https://github.com/jh7370 commented:

The coding standard I linked last time say only to modify the bits of code you touch in the PR, not the whole files. It looks like some of these files aren't even touched by this PR...

https://github.com/llvm/llvm-project/pull/98414