fixed blackhole config to be boolean

NzbDrone.Core/Providers/Core/ConfigProvider.cs

@@ -173,9 +173,9 @@ namespace NzbDrone.Core.Providers.Core
             set { SetValue("SabTvPriority", value); }
         }
 
-        public virtual String UseBlackhole
+        public virtual Boolean UseBlackhole
         {
-            get { return GetValue("UseBlackhole"); }
+            get { return GetValueBoolean("UseBlackhole"); }
 
             set { SetValue("UseBlackhole", value); }
         }

NzbDrone.Core/Providers/Indexer/IndexerProviderBase.cs

@@ -157,7 +157,7 @@ namespace NzbDrone.Core.Providers.Indexer
                 parseResult.EpisodeTitle = episodes[0].Title;
                 var sabTitle = _sabProvider.GetSabTitle(parseResult);
 
-                if (Convert.ToBoolean(_configProvider.UseBlackhole))
+                if (_configProvider.UseBlackhole)
                 {
                     var blackholeDir = _configProvider.BlackholeDirectory;
                     var folder = !String.IsNullOrEmpty(blackholeDir) ? blackholeDir : Path.Combine(CentralDispatch.AppPath, "App_Data");

NzbDrone.Web/Controllers/SettingsController.cs

@@ -392,7 +392,7 @@ namespace NzbDrone.Web.Controllers
                 _configProvider.SabTvCategory = data.SabTvCategory;
                 _configProvider.SabUsername = data.SabUsername;
                 _configProvider.SabTvPriority = data.SabTvPriority.ToString();
-                _configProvider.UseBlackhole = data.UseBlackHole.ToString();
+                _configProvider.UseBlackhole = data.UseBlackHole;
                 _configProvider.BlackholeDirectory = data.BlackholeDirectory;
 
                 return Content(SETTINGS_SAVED);