[gtk] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit c3c36d45e549da805848f7202443776c91759d9e
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Fri Apr 5 19:56:06 2019 +0200

    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 0109a426fe..d0121705da 100644
--- a/po-properties/POTFILES.in
+++ b/po-properties/POTFILES.in
@@ -170,6 +170,7 @@ gtk/gtkgestureswipe.c
 gtk/gtkgesturezoom.c
 gtk/gtkglarea.c
 gtk/gtkgrid.c
+gtk/gtkgridlayout.c
 gtk/gtkheaderbar.c
 gtk/gtkicontheme.c
 gtk/gtkiconview.c
diff --git a/po/POTFILES.in b/po/POTFILES.in
index c789f5afef..bd78c8ada5 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -172,6 +172,7 @@ gtk/gtkgestureswipe.c
 gtk/gtkgesturezoom.c
 gtk/gtkglarea.c
 gtk/gtkgrid.c
+gtk/gtkgridlayout.c
 gtk/gtkheaderbar.c
 gtk/gtkicontheme.c
 gtk/gtkiconview.c