Upgrade windows crate (#96)

* Upgrade windows crate to 0.43

* Fixes for 0.40 API changes

Cargo.toml

@@ -32,7 +32,7 @@ block = "0.1.6"
 objc-foundation = "0.1.1"
 
 [target.'cfg(target_os = "windows")'.dependencies]
-windows = { version = "0.37", features = [
+windows = { version = "0.43", features = [
   "Win32_Foundation",
   "Win32_System_Com",
   "Win32_UI_Shell_Common",

src/backend/win_cid/file_dialog/dialog_ffi.rs

@@ -140,7 +140,7 @@ impl IDialog {
 
                     if let Some(item) = item {
                         // For some reason SetDefaultFolder(), does not guarantees default path, so we use SetFolder
-                        self.0.as_dialog().SetFolder(item)?;
+                        self.0.as_dialog().SetFolder(&item)?;
                     }
                 }
             }
@@ -194,7 +194,7 @@ impl IDialog {
 
                 let filename = read_to_string(display_name);
 
-                CoTaskMemFree(display_name.0 as _);
+                CoTaskMemFree(Some(display_name.0 as _));
 
                 let path = PathBuf::from(filename);
                 paths.push(path);
@@ -210,7 +210,7 @@ impl IDialog {
             let display_name = res_item.GetDisplayName(SIGDN_FILESYSPATH)?;
 
             let filename = read_to_string(display_name);
-            CoTaskMemFree(display_name.0 as _);
+            CoTaskMemFree(Some(display_name.0 as _));
 
             Ok(PathBuf::from(filename))
         }

src/backend/win_cid/utils.rs

@@ -4,13 +4,11 @@ use windows::Win32::System::Com::{
     CoInitializeEx, CoUninitialize, COINIT_APARTMENTTHREADED, COINIT_DISABLE_OLE1DDE,
 };
 
-use std::ptr;
-
 /// Makes sure that COM lib is initialized long enought
 pub fn init_com<T, F: FnOnce() -> T>(f: F) -> Result<T> {
     unsafe {
         CoInitializeEx(
-            ptr::null_mut(),
+            None,
             COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE,
         )?
     };