[gnome-software] snap: Fix icons not being converted to pixbufs

[Robert Ancell <rancell src gnome org>]

commit 4c3adbd7e73eb6741b45c8a0780542c4b6dfa011
Author: Robert Ancell <robert ancell canonical com>
Date:   Fri Jun 9 21:53:43 2017 +1200

    snap: Fix icons not being converted to pixbufs

 plugins/snap/gs-plugin-snap.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/plugins/snap/gs-plugin-snap.c b/plugins/snap/gs-plugin-snap.c
index 3c4339b..ce00b99 100644
--- a/plugins/snap/gs-plugin-snap.c
+++ b/plugins/snap/gs-plugin-snap.c
@@ -49,6 +49,7 @@ gs_plugin_initialize (GsPlugin *plugin)
        gs_plugin_add_rule (plugin, GS_PLUGIN_RULE_RUN_AFTER, "desktop-categories");
        gs_plugin_add_rule (plugin, GS_PLUGIN_RULE_RUN_AFTER, "ubuntu-reviews");
        gs_plugin_add_rule (plugin, GS_PLUGIN_RULE_BETTER_THAN, "packagekit");
+       gs_plugin_add_rule (plugin, GS_PLUGIN_RULE_RUN_BEFORE, "icons");
 
        /* set name of MetaInfo file */
        gs_plugin_set_appstream_id (plugin, "org.gnome.Software.Plugin.Snap");