[gtk] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit b42bf99b1307830038a181d7fa0c67655fba369c
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Tue Mar 26 18:36:51 2019 +0100

    Update POTFILES.in

 po-properties/POTFILES.in | 1 +
 po/POTFILES.in            | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/po-properties/POTFILES.in b/po-properties/POTFILES.in
index 4fa7093b8e..126d149021 100644
--- a/po-properties/POTFILES.in
+++ b/po-properties/POTFILES.in
@@ -78,6 +78,7 @@ gtk/gtkbin.c
 gtk/gtkbindings.c
 gtk/gtkbookmarksmanager.c
 gtk/gtkbox.c
+gtk/gtkboxlayout.c
 gtk/gtkbuildable.c
 gtk/gtkbuilder.c
 gtk/gtkbuilder-menus.c
diff --git a/po/POTFILES.in b/po/POTFILES.in
index de908bccab..7274ae3515 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -78,6 +78,7 @@ gtk/gtkbin.c
 gtk/gtkbindings.c
 gtk/gtkbookmarksmanager.c
 gtk/gtkbox.c
+gtk/gtkboxlayout.c
 gtk/gtkbuildable.c
 gtk/gtkbuilder.c
 gtk/gtkbuilder-menus.c