[gegl] po: update POTFILES

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 91a19642cdd007015626f90ecfcc6b2ec1b8687e
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Mar 1 14:16:41 2019 +0100

    po: update POTFILES

 po/POTFILES.in | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 14b9fe382..91e6a8899 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -2,7 +2,9 @@
 # Please keep this file sorted alphabetically.
 bin/gegl.c
 bin/gegl-options.c
-bin/ui.c
+bin/ui-core.c
+bin/ui-viewer.c
+bin/ui-collection.c
 gegl/buffer/gegl-buffer-enums.c
 gegl/gegl-enums.c
 gegl/gegl-init.c