Fixed bug that caused redundant casts.

ICSharpCode.Decompiler/Ast/AstMethodBodyBuilder.cs

@@ -739,6 +739,8 @@ namespace ICSharpCode.Decompiler.Ast
 				}
 
 				if (actualIsIntegerOrEnum && requiredIsIntegerOrEnum) {
+					if (actualType.FullName == reqType.FullName)
+						return expr;
 					return expr.CastTo(AstBuilder.ConvertType(reqType));
 				}
 				return expr;

ICSharpCode.Decompiler/Tests/Types/TypeTests.cs

@@ -6,6 +6,7 @@ using NUnit.Framework;
 
 namespace ICSharpCode.Decompiler.Tests.Types
 {
+	[TestFixture]
 	public class TypeTests : DecompilerTestBase
 	{
 		[Test]