[gimp] app: oups, forgot to add an correspondance for XCF 16 loading handler.

[Jehan <jehanp src gnome org>]

commit cbf979e506e61ab149aa84cbf1ba9fa82a3d1995
Author: Jehan <jehan girinstud io>
Date:   Thu Dec 23 14:11:16 2021 +0100

    app: oups, forgot to add an correspondance for XCF 16 loading handler.

 app/xcf/xcf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/app/xcf/xcf.c b/app/xcf/xcf.c
index d079b0a549..3db206c6f4 100644
--- a/app/xcf/xcf.c
+++ b/app/xcf/xcf.c
@@ -83,7 +83,8 @@ static GimpXcfLoaderFunc * const xcf_loaders[] =
   xcf_load_image,   /* version 12 */
   xcf_load_image,   /* version 13 */
   xcf_load_image,   /* version 14 */
-  xcf_load_image    /* version 15 */
+  xcf_load_image,   /* version 15 */
+  xcf_load_image    /* version 16 */
 };