[balsa] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit f991e28d9e2d49a29629eb418f6907099334a79b
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Mon Jun 19 01:39:19 2017 +0200

    Update POTFILES.in

 po/POTFILES.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 116e3a4..4252f2b 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -25,6 +25,7 @@ libbalsa/libbalsa.c
 libbalsa/libbalsa-conf.c
 libbalsa/libbalsa-gpgme.c
 libbalsa/libbalsa-gpgme-cb.c
+libbalsa/libbalsa-progress.c
 libbalsa/libbalsa-vfs.c
 libbalsa/mailbox.c
 libbalsa/mailbox_imap.c