[gnome-builder] po: update POTFILES.in

[Christian Hergert <chergert src gnome org>]

commit c7347121ccfc9ac288955f39320a418f2ad8c6a8
Author: Christian Hergert <chergert redhat com>
Date:   Thu Feb 21 12:36:37 2019 -0800

    po: update POTFILES.in

 po/POTFILES.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 015fb5a66..27ab5aec2 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -345,6 +345,7 @@ src/plugins/vcsui/gtk/menus.ui
 src/plugins/vim/gb-vim.c
 src/plugins/vim/gbp-vim-command-provider.c
 src/plugins/vim/gbp-vim-preferences-addin.c
+src/plugins/waf/waf_plugin.py
 src/plugins/xml-pack/ide-xml-highlighter.c
 src/plugins/xml-pack/ide-xml-parser.c
 src/plugins/xml-pack/ide-xml-sax.c