[compiler-rt] Fix an MSVC build issue. (PR #111557)

[Hiroshi Yamauchi via llvm-commits]

hjyamauchi wrote:

@mstorsjo @efriedma-quic Thank you. I'm hitting this issue in the downstream Swift toolchain arm64 build for Windows cross-compiled on x64 windows by MSVC :) I presume that there's no LLVM buildbot building arm64 compiler-rt with MSVC (Aslo maybe compiler-rt is only meant to be built with Clang/LLVM?) Anyhow this issue was mitigated downstream. So I will retract this PR. I appreciate your comments!

https://github.com/llvm/llvm-project/pull/111557