glib: Ignore deprecations when declaring autocleanups

We may need to declare autocleanups for new types, which will be marked
as ‘deprecated’ if the code which includes GLib doesn’t declare a high
enough `GLIB_VERSION_MAX_ALLOWED`. Despite that, we still need to
declare the autocleanups.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

glib/glib-autocleanups.h

@@ -35,6 +35,10 @@ g_autoptr_cleanup_gstring_free (GString *string)
     g_string_free (string, TRUE);
 }
 
+/* Ignore deprecations in case we refer to a type which was added in a more
+ * recent GLib version than the user’s #GLIB_VERSION_MAX_ALLOWED definition. */
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+
 /* If adding a cleanup here, please also add a test case to
  * glib/tests/autoptr.c
  */
@@ -91,3 +95,5 @@ G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC(GVariantDict, g_variant_dict_clear)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GVariantType, g_variant_type_free)
 G_DEFINE_AUTO_CLEANUP_FREE_FUNC(GStrv, g_strfreev, NULL)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC (GRefString, g_ref_string_release)
+
+G_GNUC_END_IGNORE_DEPRECATIONS