Warning/error fixing.

osu.Game/Database/ScoreDatabase.cs

@@ -38,8 +38,7 @@ namespace osu.Game.Database
             using (Stream s = storage.GetStream(Path.Combine(replay_folder, replayFilename)))
             using (SerializationReader sr = new SerializationReader(s))
             {
-                var ruleset = Ruleset.GetRuleset((PlayMode)sr.ReadByte());
-
+                Ruleset.GetRuleset((PlayMode)sr.ReadByte());
                 score = new Score();
 
                 /* score.Pass = true;*/

osu.Game/Modes/ScoreProcesssor.cs

@@ -40,6 +40,9 @@ namespace osu.Game.Modes
         /// </summary>
         public event Action Failed;
 
+        /// <summary>
+        /// Notifies subscribers that the score is in a failed state.
+        /// </summary>
         protected void TriggerFailed()
         {
             Failed?.Invoke();