Add a db.Dispose before calling Delete on the SQLite database.

On Windows, you are not able to delete a file while there is
still a handle to it open.

OpenSim/Data/SQLite/Tests/SQLiteAssetTest.cs

@@ -56,6 +56,7 @@ namespace OpenSim.Data.SQLite.Tests
         [TestFixtureTearDown]
         public void Cleanup()
         {
+            db.Dispose();
             System.IO.File.Delete(file);
         }
     }

OpenSim/Data/SQLite/Tests/SQLiteInventoryTest.cs

@@ -64,6 +64,7 @@ namespace OpenSim.Data.SQLite.Tests
         [TestFixtureTearDown]
         public void Cleanup()
         {
+            db.Dispose();
             System.IO.File.Delete(file);
         }
     }

OpenSim/Data/SQLite/Tests/SQLiteRegionTest.cs

@@ -55,7 +55,8 @@ namespace OpenSim.Data.SQLite.Tests
         [TestFixtureTearDown]
         public void Cleanup()
         {
-            // System.IO.File.Delete(file);
+            db.Dispose();
+            System.IO.File.Delete(file);
         }
     }
 }

OpenSim/Data/SQLite/Tests/SQLiteUserTest.cs

@@ -55,6 +55,7 @@ namespace OpenSim.Data.SQLite.Tests
         [TestFixtureTearDown]
         public void Cleanup()
         {
+            db.Dispose();
             System.IO.File.Delete(file);
         }
     }