[gnome-software] trivial: Fix the runtime fallbacks to be more sane

[Richard Hughes <rhughes src gnome org>]

commit d6892ceb9fdd710558d35b5ba6bc70fbc2f29124
Author: Richard Hughes <richard hughsie com>
Date:   Thu Jul 13 18:24:36 2017 +0100

    trivial: Fix the runtime fallbacks to be more sane

 lib/gs-app.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/lib/gs-app.c b/lib/gs-app.c
index 03488f3..d63654a 100644
--- a/lib/gs-app.c
+++ b/lib/gs-app.c
@@ -1645,8 +1645,7 @@ gs_app_set_content_rating (GsApp *app, AsContentRating *content_rating)
  * gs_app_get_runtime:
  * @app: a #GsApp
  *
- * Gets the runtime for the installed application if the application is already
- * installed, or the runtime for the available application otherwise.
+ * Gets the runtime for the installed application.
  *
  * Returns: (transfer none): a #GsApp, or %NULL for unset
  *
@@ -1657,7 +1656,7 @@ gs_app_get_runtime (GsApp *app)
 {
        GsAppPrivate *priv = gs_app_get_instance_private (app);
        g_return_val_if_fail (GS_IS_APP (app), NULL);
-       if (gs_app_is_installed (app))
+       if (priv->runtime != NULL)
                return priv->runtime;
        return priv->update_runtime;
 }
@@ -1696,7 +1695,9 @@ gs_app_get_update_runtime (GsApp *app)
 {
        GsAppPrivate *priv = gs_app_get_instance_private (app);
        g_return_val_if_fail (GS_IS_APP (app), NULL);
-       return priv->update_runtime;
+       if (priv->update_runtime != NULL)
+               return priv->update_runtime;
+       return priv->runtime;
 }
 
 /**