[gnome-robots/wip/libgames-support] Update for another libgames-support API change

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 2300d4e3cc2f7df19ed09db871f8cfbcb5d7c244
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Sep 20 14:40:10 2015 -0500

    Update for another libgames-support API change

 src/game.c |    8 +-------
 1 files changed, 1 insertions(+), 7 deletions(-)
---
diff --git a/src/game.c b/src/game.c
index cde45df..694dd6b 100644
--- a/src/game.c
+++ b/src/game.c
@@ -126,13 +126,7 @@ message_box (gchar * msg)
 void
 show_scores (void)
 {
-  GError *error = NULL;
-  games_scores_context_run_dialog (highscores, &error);
-
-  if (error) {
-    g_warning ("Failed to run scores dialog: %s", error->message);
-    g_error_free (error);
-  }
+  games_scores_context_run_dialog (highscores);
 }
 
 /**