[llvm] [NFC][Fuzzer] Fix zero-size array argv warning (PR #112944)

[Björn Pettersson via llvm-commits]

https://github.com/bjope commented:

I think we can do this rather small change if it makes life simpler for those using gcc.

Afaict the problem is that the warning was incorrect/false, right?

It would be nice if the commit message say something about that this just refactors the code to avoid a false warning from gcc, rather than saying that it fixes a warning (because the end result is supposed to be the same, so if I understand correctly this patch is a NFC refactoring and not really fixing a problem with zero-size arrays).

So LG, if you update the commit message to clarify that part.

https://github.com/llvm/llvm-project/pull/112944