[gtk] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit 115edc5fd149f72a04a0a5ef0dd0d32e1faa0b27
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Jun 7 09:27:34 2020 +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 be3fa66ab0..4b50b92b6c 100644
--- a/po-properties/POTFILES.in
+++ b/po-properties/POTFILES.in
@@ -253,6 +253,7 @@ gtk/gtkprintoperation-win32.c
 gtk/gtkprintunixdialog.c
 gtk/gtkprogressbar.c
 gtk/gtkpropertylookuplistmodel.c
+gtk/gtkpropertyselection.c
 gtk/gtkradiobutton.c
 gtk/gtkrange.c
 gtk/gtkrecentmanager.c
diff --git a/po/POTFILES.in b/po/POTFILES.in
index e76d8e8c6a..7ac657050b 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -255,6 +255,7 @@ gtk/gtkprintoperation-win32.c
 gtk/gtkprintunixdialog.c
 gtk/gtkprogressbar.c
 gtk/gtkpropertylookuplistmodel.c
+gtk/gtkpropertyselection.c
 gtk/gtkradiobutton.c
 gtk/gtkrange.c
 gtk/gtkrecentmanager.c