[gimp/wip/Jehan/fix-ci] libgimp: add gimp_param_spec_get_desc() in gimp.def.

[Jehan <jehanp src gnome org>]

commit fdcf74ea72e39ba9b4343f5f137159e1b4fbff7c
Author: Jehan <jehan girinstud io>
Date:   Tue Apr 28 20:15:28 2020 +0200

    libgimp: add gimp_param_spec_get_desc() in gimp.def.

 libgimp/gimp.def | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/libgimp/gimp.def b/libgimp/gimp.def
index 0d11b4d25d..c09cbefa4c 100644
--- a/libgimp/gimp.def
+++ b/libgimp/gimp.def
@@ -635,6 +635,7 @@ EXPORTS
        gimp_param_spec_channel
        gimp_param_spec_display
        gimp_param_spec_drawable
+       gimp_param_spec_get_desc
        gimp_param_spec_image
        gimp_param_spec_item
        gimp_param_spec_layer