[llvm-branch-commits] [llvm-size] Fallback to defaults on error in args (PR #128447)

[Fangrui Song via llvm-branch-commits]

MaskRay wrote:

The default value of `OutputFormat` is `berkeley`, so the assignment seems redundant.
I see that `Radix` does need a change. Perhaps initialize the global variable instead.

https://github.com/llvm/llvm-project/pull/128447