[gimp] libgimp: fix the def file.

[Jehan <jehanp src gnome org>]

commit c10ffd4f3852c1dfc8ea593b8dc2690015f4d211
Author: Jehan <jehan girinstud io>
Date:   Thu Dec 17 23:46:12 2020 +0100

    libgimp: fix the def file.

 libgimp/gimp.def | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/libgimp/gimp.def b/libgimp/gimp.def
index b999ba9f34..bf196a23d6 100644
--- a/libgimp/gimp.def
+++ b/libgimp/gimp.def
@@ -263,6 +263,7 @@ EXPORTS
        gimp_file_load_layer
        gimp_file_load_layers
        gimp_file_procedure_get_extensions
+       gimp_file_procedure_get_format_name
        gimp_file_procedure_get_handles_remote
        gimp_file_procedure_get_magics
        gimp_file_procedure_get_mime_types
@@ -270,6 +271,7 @@ EXPORTS
        gimp_file_procedure_get_priority
        gimp_file_procedure_get_type
        gimp_file_procedure_set_extensions
+       gimp_file_procedure_set_format_name
        gimp_file_procedure_set_handles_remote
        gimp_file_procedure_set_magics
        gimp_file_procedure_set_mime_types