[gnome-mud] Update POTFILES.in following switch to gtkbuilder.

[Mart Raudsepp <mraudsepp src gnome org>]

commit 9eb2a52f0146aad460accf838250a1b8c7f37fdb
Author: Jordi Mallach <jordi mallach net>
Date:   Fri Apr 28 23:35:10 2017 +0000

    Update POTFILES.in following switch to gtkbuilder.

 po/POTFILES.in |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index c394d7d..b6397ef 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -13,6 +13,6 @@ src/mud-trigger.c
 src/mud-window.c
 src/mud-window-prefs.c
 src/handlers/mud-telnet-mccp.c
-ui/main.glade
-ui/muds.glade
-ui/prefs.glade
+[type: gettext/glade]ui/main.ui
+[type: gettext/glade]ui/muds.ui
+[type: gettext/glade]ui/prefs.ui