desktop_app_info: Don't borrow mutable fds

Author: A6GibKm

gio/src/desktop_app_info.rs

@@ -55,9 +55,9 @@ pub trait DesktopAppInfoExtManual: IsA<DesktopAppInfo> {
         spawn_flags: glib::SpawnFlags,
         user_setup: Option<Box_<dyn FnOnce() + 'static>>,
         pid_callback: Option<&mut dyn (FnMut(&DesktopAppInfo, glib::Pid))>,
-        stdin_fd: &mut T,
-        stdout_fd: &mut U,
-        stderr_fd: &mut V,
+        stdin_fd: T,
+        stdout_fd: U,
+        stderr_fd: V,
     ) -> Result<(), Error> {
         let user_setup_data: Box_<Option<Box_<dyn FnOnce() + 'static>>> = Box_::new(user_setup);
         unsafe extern "C" fn user_setup_func(user_data: glib::ffi::gpointer) {