[libgsf] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit 7447241281d614a0faff8e66cad52f427c655042
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Oct 19 14:21:03 2019 +0200

    Update POTFILES.in

 po/POTFILES.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index b6eebc8..98f23e7 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -20,6 +20,7 @@ gsf/gsf-outfile-zip.c
 gsf/gsf-output-bzip.c
 gsf/gsf-output.c
 gsf/gsf-output-csv.c
+gsf/gsf-output-gzip.c
 gsf/gsf-output-iconv.c
 gsf/gsf-output-stdio.c
 thumbnailer/main.c