[gnome-software] snap: Hide warning when local snap doesn't have an icon

[Richard Hughes <rhughes src gnome org>]

commit e50a9389a82f506a89dfd429b917ba93791e4de2
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Dec 4 16:15:30 2019 +1300

    snap: Hide warning when local snap doesn't have an icon
    
    This is the case for many snaps and not considered a problem.
    This error code is returned in snapd-glib >= 1.55, until then you will continue
    to see this warning.

 plugins/snap/gs-plugin-snap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/plugins/snap/gs-plugin-snap.c b/plugins/snap/gs-plugin-snap.c
index 6ef850a8..f0afbb67 100644
--- a/plugins/snap/gs-plugin-snap.c
+++ b/plugins/snap/gs-plugin-snap.c
@@ -631,7 +631,8 @@ load_snap_icon (GsApp *app, SnapdClient *client, SnapdSnap *snap, GCancellable *
 
        icon = snapd_client_get_icon_sync (client, gs_app_get_metadata_item (app, "snap::name"), cancellable, 
&error);
        if (icon == NULL) {
-               g_warning ("Failed to load snap icon: %s", error->message);
+               if (!g_error_matches (error, SNAPD_ERROR, SNAPD_ERROR_NOT_FOUND))
+                       g_warning ("Failed to load snap icon: %s", error->message);
                return FALSE;
        }