[gnome-software] trivial: Don't show (null) in the window title for firmware files

[Richard Hughes <rhughes src gnome org>]

commit 8d14c3bb14faed1c678676ccda6149bae80730d9
Author: Richard Hughes <richard hughsie com>
Date:   Tue Jul 28 13:15:11 2015 +0100

    trivial: Don't show (null) in the window title for firmware files

 src/gs-update-dialog.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/gs-update-dialog.c b/src/gs-update-dialog.c
index 21b85a8..547aee1 100644
--- a/src/gs-update-dialog.c
+++ b/src/gs-update-dialog.c
@@ -102,12 +102,15 @@ set_updates_description_ui (GsUpdateDialog *dialog, GsApp *app)
        kind = gs_app_get_kind (app);
        if (kind == GS_APP_KIND_OS_UPDATE) {
                gtk_window_set_title (GTK_WINDOW (dialog), gs_app_get_name (app));
-       } else {
+       } else if (gs_app_get_source_default (app) != NULL) {
                _cleanup_free_ gchar *tmp = NULL;
                tmp = g_strdup_printf ("%s %s",
                                       gs_app_get_source_default (app),
                                       gs_app_get_update_version (app));
                gtk_window_set_title (GTK_WINDOW (dialog), tmp);
+       } else {
+               gtk_window_set_title (GTK_WINDOW (dialog),
+                                     gs_app_get_update_version (app));
        }
 
        /* get the update description */