[gimp] libgimp: gimp_vectors_stroke_reverse missing in def file.

[Jehan <jehanp src gnome org>]

commit d93d7effb2d68118283a5ed569c3345d406d0a30
Author: Jehan <jehan girinstud io>
Date:   Mon Aug 3 03:18:45 2020 +0200

    libgimp: gimp_vectors_stroke_reverse missing in def file.
    
    First bug found by our new distcheck CI step!

 libgimp/gimp.def | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/libgimp/gimp.def b/libgimp/gimp.def
index d8b1f141f1..f4696557ce 100644
--- a/libgimp/gimp.def
+++ b/libgimp/gimp.def
@@ -836,6 +836,7 @@ EXPORTS
        gimp_vectors_stroke_get_points
        gimp_vectors_stroke_interpolate
        gimp_vectors_stroke_new_from_points
+       gimp_vectors_stroke_reverse
        gimp_vectors_stroke_rotate
        gimp_vectors_stroke_scale
        gimp_vectors_stroke_translate