[llvm] [DebugInfo] Convert format() to formatv() in DWARFVerifier (PR #179194)

[David Spickett via llvm-commits]

DavidSpickett wrote:

> as well? I think this adds to the readability but for sure this is a NFC and I don't know about common practice.

As discussed on Discord, I think it does make sense.

https://github.com/llvm/llvm-project/pull/179194