single scop

src/main.rs

@@ -37,13 +37,14 @@ fn main() -> Result<(), Box<dyn Error>> {
     let boot_folder = unsafe { boot_folder.unwrap_unchecked() };
 
     #[cfg(windows)]
+    let boot_folder = {
         if args.boot_directory.is_none() {
             eprintln!("You must supply a boot-directory on windows; see --help");
             exit(1);
         }
 
-    #[cfg(windows)]
-    let boot_folder = unsafe { args.boot_directory.unwrap_unchecked() };
+        unsafe { args.boot_directory.unwrap_unchecked() }
+    };
 
     let grub_env = boot_folder.join("grub/grubenv");