Fix stuck r# inspection

osu.Game/Utils/RavenLogger.cs

@@ -20,14 +20,14 @@ namespace osu.Game.Utils
 
         private readonly List<Task> tasks = new List<Task>();
 
-        private Exception lastException;
-
         public RavenLogger(OsuGame game)
         {
             raven.Release = game.Version;
 
             if (!game.IsDeployedBuild) return;
 
+            Exception lastException = null;
+
             Logger.NewEntry += entry =>
             {
                 if (entry.Level < LogLevel.Verbose) return;