[libgames-support] Get rid of blocking I/O in save_score_to_file

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 673fec980eac02f74995c2eaff762243c0fe6cbb
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Sep 20 17:51:33 2015 -0500

    Get rid of blocking I/O in save_score_to_file

 games/scores/context.vala |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)
---
diff --git a/games/scores/context.vala b/games/scores/context.vala
index 425d9e1..6ddf96c 100644
--- a/games/scores/context.vala
+++ b/games/scores/context.vala
@@ -187,13 +187,11 @@ public class Context : Object
         }
 
         var file = File.new_for_path (Path.build_filename (user_score_dir, category.key));
+        var stream = file.append_to (FileCreateFlags.NONE);
+        var line = @"$(score.score) $(score.time) $(score.user)\n";
 
-        // FIXME should not be doing sync I/O here
-        var dos = new DataOutputStream (file.append_to (FileCreateFlags.NONE));
-
-        dos.put_string (score.score.to_string () + " " +
-                        score.time.to_string () + " " +
-                        score.user + "\n");
+        // FIXME add cancellable parameter
+        yield stream.write_all_async (line.data, Priority.DEFAULT, null, null);
     }
 
     private void load_scores_from_files () throws Error