fix Windows sparsify: use Win32_System_Ioctl for FSCTL constants, fix HANDLE type

Signed-off-by: danbugs <danilochiarlone@gmail.com>

Author: danbugs

host/Cargo.toml

@@ -41,5 +41,5 @@ nix = { version = "0.29", features = ["fs"] }
 libc = "0.2"
 
 [target.'cfg(windows)'.dependencies]
-windows-sys = { version = "0.61", features = ["Win32_System_IO", "Win32_Storage_FileSystem"] }
+windows-sys = { version = "0.61", features = ["Win32_System_IO", "Win32_System_Ioctl", "Win32_Storage_FileSystem"] }
 

host/src/lib.rs

@@ -1593,15 +1593,15 @@ fn sparsify_snapshot(path: &Path) -> Result<()> {
 #[cfg(target_os = "windows")]
 fn sparsify_snapshot(path: &Path) -> Result<()> {
     use std::os::windows::io::AsRawHandle;
-    use windows_sys::Win32::Storage::FileSystem::{FSCTL_SET_SPARSE, FSCTL_SET_ZERO_DATA};
+    use windows_sys::Win32::System::Ioctl::{FSCTL_SET_SPARSE, FSCTL_SET_ZERO_DATA};
     use windows_sys::Win32::System::IO::DeviceIoControl;
 
     let file = std::fs::OpenOptions::new()
         .read(true)
         .write(true)
         .open(path)?;
     let len = file.metadata()?.len();
-    let handle = file.as_raw_handle() as isize;
+    let handle = file.as_raw_handle();
 
     // Mark file as sparse.
     let ok = unsafe {