Fixed a couple tests, so they shouldn't fail due to other tests impacting them.

NzbDrone.Core.Test/ConfigFileProviderTest.cs

@@ -19,6 +19,8 @@ namespace NzbDrone.Core.Test
             //Reset config file
             var mocker = new AutoMoqer();
             var configFile = mocker.Resolve<ConfigFileProvider>().ConfigFile;
+
+            if (File.Exists(configFile))
                 File.Delete(configFile);
 
             mocker.Resolve<ConfigFileProvider>().CreateDefaultConfigFile();

NzbDrone.Core.Test/PostDownloadProviderTest.cs

@@ -73,18 +73,22 @@ namespace NzbDrone.Core.Test
             var postDownloadStatus = PostDownloadStatusType.Failed;
 
             var postDownloadProvider = new PostDownloadProvider();
-            postDownloadProvider.Add(new PostDownloadInfoModel
+
+            var model = new PostDownloadInfoModel
                             {
                                 Name = path,
                                 Status = postDownloadStatus,
                                 Added = DateTime.Now.AddMinutes(-5)
-                                         });
+                            };
+
+            postDownloadProvider.Add(model);
 
             //Act
             mocker.Resolve<PostDownloadProvider>().ProcessFailedOrUnpackingDownload(new DirectoryInfo(Path.Combine(Directory.GetCurrentDirectory(), path)), postDownloadStatus);
 
             //Assert
             mocker.VerifyAllMocks();
+            postDownloadProvider.Remove(model);
         }
 
         [Test]