[clang] [Clang] Initialize bypassed variables w/ trivial-auto-var-init (PR #181937)

[Justin Stitt via cfe-commits]

JustinStitt wrote:

I've implemented support for initializing even in looping contexts PTAL [`f7cc3fd`](https://github.com/llvm/llvm-project/pull/181937/commits/f7cc3fd07f5eb3d6c214588efc05f97cc79a1369)

https://github.com/llvm/llvm-project/pull/181937