[compiler-rt] [sanitizer-common] sanitizer_array_ref_test should not require C++17 (PR #161252)

[Dan Blackwell via llvm-commits]

DanBlackwell wrote:

LLVM uses C++17 (https://llvm.org/docs/CodingStandards.html#c-standard-versions), is the current version failing to build?

https://github.com/llvm/llvm-project/pull/161252