[gnome-software/1843-gs-screenshot-support-videos-as-screenshot] gs-appstream: Skip screenshots it cannot read

[Milan Crha <mcrha src gnome org>]

commit 9efb9156e62647beea3be8ed255473a38ca96aaa
Author: Milan Crha <mcrha redhat com>
Date:   Tue Aug 9 15:51:44 2022 +0200

    gs-appstream: Skip screenshots it cannot read
    
    Let it skip screenshots it cannot read, to not have in the list
    an empty screenshot, not referencing anything.

 lib/gs-appstream.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)
---
diff --git a/lib/gs-appstream.c b/lib/gs-appstream.c
index 13eb352a8..4e6a56afd 100644
--- a/lib/gs-appstream.c
+++ b/lib/gs-appstream.c
@@ -391,7 +391,11 @@ gs_appstream_refine_add_addons (GsPlugin *plugin,
 }
 
 static gboolean
-gs_appstream_refine_add_images (GsApp *app, AsScreenshot *ss, XbNode *screenshot, GError **error)
+gs_appstream_refine_add_images (GsApp *app,
+                               AsScreenshot *ss,
+                               XbNode *screenshot,
+                               gboolean *out_any_added,
+                               GError **error)
 {
        g_autoptr(GError) error_local = NULL;
        g_autoptr(GPtrArray) images = NULL;
@@ -414,6 +418,8 @@ gs_appstream_refine_add_images (GsApp *app, AsScreenshot *ss, XbNode *screenshot
                as_screenshot_add_image (ss, im);
        }
 
+       *out_any_added = *out_any_added || images->len > 0;
+
        /* success */
        return TRUE;
 }
@@ -435,9 +441,11 @@ gs_appstream_refine_add_screenshots (GsApp *app, XbNode *component, GError **err
        for (guint i = 0; i < screenshots->len; i++) {
                XbNode *screenshot = g_ptr_array_index (screenshots, i);
                g_autoptr(AsScreenshot) ss = as_screenshot_new ();
-               if (!gs_appstream_refine_add_images (app, ss, screenshot, error))
+               gboolean any_added = FALSE;
+               if (!gs_appstream_refine_add_images (app, ss, screenshot, &any_added, error))
                        return FALSE;
-               gs_app_add_screenshot (app, ss);
+               if (any_added)
+                       gs_app_add_screenshot (app, ss);
        }
 
        /* FIXME: move into no refine flags section? */