[libunwind] [libunwind] Fix compilation for the x32 ABI. (PR #116608)

[Alex Rønne Petersen via cfe-commits]

alexrp wrote:

> ⚠️ C/C++ code formatter, clang-format found issues in your code. ⚠️

Ok, but this is just clearly silly given the surrounding code.

https://github.com/llvm/llvm-project/pull/116608