removed #[cfg(windows)] from MSVC_MESSAGE because the scope changed
removed #[cfg(windows)] from MSVC_MESSAGE because the scope changed

inejge/rustup.rs,theindigamer/rustup.rs,nodakai/rustup.rs,Boddlnagg/rustup.rs,Boddlnagg/rustup.rs,nodakai/rustup.rs,rust-lang/rustup,theindigamer/rustup.rs,inejge/rustup.rs,rust-lang/rustup,inejge/rustup.rs,rust-lang/rustup,inejge/rustup.rs,nodakai/rustup.rs,nodakai/rustup.rs,nodakai/rustup.rs,theindigamer/rustup.rs,rust-lang/rustup,Boddlnagg/rustup.rs,Boddlnagg/rustup.rs,theindigamer/rustup.rs,inejge/rustup.rs,Boddlnagg/rustup.rs,rust-lang/rustup,theindigamer/rustup.rs