[gnome-software/1871-source-chooser-is-broken-for-preinstalled-gnome-os-apps] gs-details-page: Hide the origin box when the app origin is not known

[Milan Crha <mcrha src gnome org>]

commit 16c1a3f4ab1f52c7351d6b745e8961cd95f905fa
Author: Milan Crha <mcrha redhat com>
Date:   Fri Aug 26 14:27:13 2022 +0200

    gs-details-page: Hide the origin box when the app origin is not known
    
    The shown app origin can be unknown in certain cases, which can show empty
    origin selector, which is not desired, thus hide it in such case.
    
    Closes https://gitlab.gnome.org/GNOME/gnome-software/-/issues/1871

 src/gs-details-page.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/src/gs-details-page.c b/src/gs-details-page.c
index cb34b655d..23b6ff66b 100644
--- a/src/gs-details-page.c
+++ b/src/gs-details-page.c
@@ -771,7 +771,10 @@ gs_details_page_get_alternates_cb (GObject *source_object,
        else if (select_row)
                gtk_list_box_row_set_activatable (GTK_LIST_BOX_ROW (select_row), FALSE);
 
-       gs_details_page_update_origin_button (self, TRUE);
+       if (select_row != NULL)
+               gs_details_page_update_origin_button (self, TRUE);
+       else
+               gtk_widget_hide (self->origin_box);
 
        if (instance_changed) {
                g_autoptr(GsPluginJob) plugin_job = NULL;