[gegl] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit a426db1a275926d8b1ae14b4300670a2a59c714b
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Mon Oct 1 18:39:57 2018 +0200

    Update POTFILES.in

 po/POTFILES.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index b8ac7d883..19e2f5741 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -2,6 +2,7 @@
 # Please keep this file sorted alphabetically.
 bin/gegl.c
 bin/gegl-options.c
+gegl/buffer/gegl-buffer-enums.c
 gegl/gegl-enums.c
 gegl/gegl-init.c
 gegl/gegl-serialize.c