WIP: Port file_open_tmp (needs verification)

Author: A6GibKm

glib/src/functions.rs

@@ -243,7 +243,7 @@ pub fn unix_open_pipe(flags: i32) -> Result<(RawFd, RawFd), Error> {
 #[doc(alias = "g_file_open_tmp")]
 pub fn file_open_tmp(
     tmpl: Option<impl AsRef<std::path::Path>>,
-) -> Result<(RawFd, std::path::PathBuf), crate::Error> {
+) -> Result<(OwnedFd, std::path::PathBuf), crate::Error> {
     unsafe {
         let mut name_used = ptr::null_mut();
         let mut error = ptr::null_mut();
@@ -253,7 +253,7 @@ pub fn file_open_tmp(
             &mut error,
         );
         if error.is_null() {
-            Ok((ret.into_raw_fd(), from_glib_full(name_used)))
+            Ok((OwnedFd::from_raw_fd(ret), from_glib_full(name_used)))
         } else {
             Err(from_glib_full(error))
         }