[gnome-software] trivial: Fix two memory leaks in the appstream plugin

[Richard Hughes <rhughes src gnome org>]

commit b3d773d22a0285e332038875057d69fe2d9ff8bf
Author: Richard Hughes <richard hughsie com>
Date:   Thu Feb 23 15:37:18 2017 +0000

    trivial: Fix two memory leaks in the appstream plugin

 src/plugins/gs-appstream.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/src/plugins/gs-appstream.c b/src/plugins/gs-appstream.c
index 9eec899..3a548f9 100644
--- a/src/plugins/gs-appstream.c
+++ b/src/plugins/gs-appstream.c
@@ -36,8 +36,10 @@ gs_appstream_create_app (GsPlugin *plugin, AsApp *item, GError **error)
                app = gs_app_new (as_app_get_id (item));
                gs_app_set_metadata (app, "GnomeSoftware::Creator",
                                     gs_plugin_get_name (plugin));
-               if (!gs_appstream_refine_app (plugin, app, item, error))
+               if (!gs_appstream_refine_app (plugin, app, item, error)) {
+                       g_object_unref (app);
                        return NULL;
+               }
                gs_plugin_cache_add (plugin, unique_id, app);
        }
        return app;
@@ -306,9 +308,9 @@ gs_appstream_create_runtime (GsPlugin *plugin,
                             GsApp *parent,
                             const gchar *runtime)
 {
-       GsApp *app_cache;
        g_autofree gchar *source = NULL;
        g_auto(GStrv) split = NULL;
+       g_autoptr(GsApp) app_cache = NULL;
        g_autoptr(GsApp) app = NULL;
 
        /* get the name/arch/branch */
@@ -333,7 +335,7 @@ gs_appstream_create_runtime (GsPlugin *plugin,
                 * source is set */
                if (gs_app_get_source_default (app_cache) == NULL)
                        gs_app_add_source (app_cache, source);
-               return g_object_ref (app_cache);
+               return g_steal_pointer (&app_cache);
        }
 
        /* save in the cache */