[dia] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit 223d893f993bd4d4b4c93e82cd04020d255cfec7
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Mon May 13 18:37:52 2019 +0200

    Update POTFILES.in

 po/POTFILES.in | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 136add3c..25eaa45d 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -2,7 +2,6 @@
 # Please keep this file sorted alphabetically.
 app/app_procs.c
 app/autosave.c
-app/color_area.c
 app/commands.c
 app/confirm.c
 app/create_object.c
@@ -11,6 +10,8 @@ app/diagram.c
 app/diagram_tree_model.c
 app/diagram_tree_view.c
 app/diapagelayout.c
+app/dia-colour-area.c
+app/dia-line-width-area.c
 app/dia-props.c
 app/disp_callbacks.c
 app/display.c
@@ -19,7 +20,6 @@ app/filedlg.c
 app/find-and-replace.c
 app/interface.c
 app/layer_dialog.c
-app/linewidth_area.c
 app/load_save.c
 app/menus.c
 app/modify_tool.c