[llvm] [InstSimplify] Fold `getelementptr inbounds null, idx -> null` (PR #130742)

[Nikita Popov via llvm-commits]

nikic wrote:

@jyknight Could you please file a glibc bug for this issue?

I guess we could add yet another hack to work around this case as well...

https://github.com/llvm/llvm-project/pull/130742