try to fix Windows

examples/cargo_without_cmake/src/main.rs

@@ -15,25 +15,21 @@ use std::{
     ptr,
 };
 
-#[cfg(unix)]
-use std::os::unix::ffi::OsStrExt;
-
 extern "C" {
     fn run_cpp(argc: c_int, argv: *const *const c_char) -> c_int;
 }
 
 fn main() {
     // https://stackoverflow.com/questions/34379641/how-do-i-convert-rust-args-into-the-argc-and-argv-c-equivalents
-    let args: Vec<CString> = std::env::args_os().map(|osstring| {
+    let args: Vec<CString> = std::env::args_os().map(|string| {
         // https://stackoverflow.com/questions/54374381/how-can-i-convert-a-windows-osstring-to-a-cstring
-
         #[cfg(unix)]
-        let intermediate = osstring.as_bytes();
+        use std::os::unix::ffi::OsStrExt;
 
         #[cfg(windows)]
-        let intermediate = osstring.to_string_lossy();
+        let string = string.to_string_lossy();
 
-        CString::new(intermediate).unwrap()
+        CString::new(string.as_bytes()).unwrap()
     }).collect();
 
     let mut c_args: Vec<*const c_char> = args.iter().map(|arg| arg.as_ptr()).collect();