fixed broken update tests.

NzbDrone.Core.Test/UpdateTests/UpdateServiceFixture.cs

@@ -150,5 +150,11 @@ namespace NzbDrone.Core.Test.UpdateTests
             updateSubFolder.GetDirectories().Should().HaveCount(1);
             updateSubFolder.GetFiles().Should().NotBeEmpty();
         }
+
+        [TearDown]
+        public void TearDown()
+        {
+            ExceptionVerification.IgnoreErrors();
+        }
     }
 }