[gtk+] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit 3f39dc20ae6b850f8cadb590b1e6f1624a88498b
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Jun 11 16:57:47 2017 +0200

    Update POTFILES.in

 po-properties/POTFILES.in |    1 +
 po/POTFILES.in            |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/po-properties/POTFILES.in b/po-properties/POTFILES.in
index 1f54052..7320939 100644
--- a/po-properties/POTFILES.in
+++ b/po-properties/POTFILES.in
@@ -87,6 +87,7 @@ gtk/gtkcellrendererspinner.c
 gtk/gtkcellrenderertext.c
 gtk/gtkcellrenderertoggle.c
 gtk/gtkcellview.c
+gtk/gtkcenterbox.c
 gtk/gtkcheckbutton.c
 gtk/gtkcheckmenuitem.c
 gtk/gtkclipboard.c
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 62fc7e8..a601c05 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -87,6 +87,7 @@ gtk/gtkcellrendererspinner.c
 gtk/gtkcellrenderertext.c
 gtk/gtkcellrenderertoggle.c
 gtk/gtkcellview.c
+gtk/gtkcenterbox.c
 gtk/gtkcheckbutton.c
 gtk/gtkcheckmenuitem.c
 gtk/gtkclipboard.c