[gthumb] updated POTFILES.in

[Paolo Bacchilega <paobac src gnome org>]

commit d7fb00bf487e4e34d78f31aa50fce1cecb89724f
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Dec 16 09:32:37 2019 +0100

    updated POTFILES.in

 po/POTFILES.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index e42f1d86..6599bcae 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -933,6 +933,7 @@ gthumb/str-utils.h
 gthumb/test-dom.c
 gthumb/test-glib-utils.c
 gthumb/test-gsignature.c
+gthumb/test-gtk-utils.c
 gthumb/test-oauth.c
 gthumb/typedefs.h
 gthumb/uri-utils.c