Update NUnit to version 2.5.9

src/Tools/NUnit/nunit-console/AssemblyInfo.cs

@@ -36,5 +36,5 @@ using System.Reflection;
 // You can specify all the values or you can default the Revision and Build Numbers 
 // by using the '*' as shown below:
 
-[assembly: AssemblyVersion("2.5.8")]
-[assembly: AssemblyInformationalVersion("2.5.8")]
+[assembly: AssemblyVersion("2.5.9")]
+[assembly: AssemblyInformationalVersion("2.5.9")]

src/Tools/NUnit/nunit-console/ExtendedConsoleUi.cs

@@ -76,11 +76,10 @@ namespace NUnit.ConsoleRunner
                     ? package.Settings["RuntimeFramework"]
                     : "Default");
 
-            TestRunner testRunner = new DefaultTestRunnerFactory().MakeTestRunner(package);
+			using (TestRunner testRunner = new DefaultTestRunnerFactory().MakeTestRunner(package))
+			{
             testRunner.Load(package);
 
-            try
-			{
 				if (testRunner.Test == null)
 				{
 					testRunner.Unload();
@@ -192,10 +191,6 @@ namespace NUnit.ConsoleRunner
             
 				return returnCode;
 			}
-			finally
-			{
-				testRunner.Unload();
-			}
 		}
 
 		#region Helper Methods