Throw NotImplementedException when attempting to clone a VariableScope.

ICSharpCode.Decompiler/IL/Instructions.cs

@@ -514,6 +514,7 @@ namespace ICSharpCode.Decompiler.IL
 		{
 			var clone = (ILFunction)ShallowClone();
 			clone.Body = this.body.Clone();
+			clone.CloneVariables();
 			return clone;
 		}
 		public override StackType ResultType { get { return StackType.O; } }

ICSharpCode.Decompiler/IL/Instructions.tt

@@ -711,8 +711,12 @@ namespace ICSharpCode.Decompiler.IL
 				if (children[i].IsCollection) {
 					b.AppendLine("\tclone." + children[i].PropertyName + " = new InstructionCollection<ILInstruction>(clone, " + i + ");");
 					b.AppendLine("\tclone." + children[i].PropertyName + ".AddRange(this." + children[i].PropertyName + ".Select(arg => arg.Clone()));");
-				} else
+				} else {
 					b.AppendLine("\tclone." + children[i].PropertyName + " = this." + children[i].Name + ".Clone();");
+				}
+			}
+			if (opCode.Name == "ILFunction") {
+				b.AppendLine("\tclone.CloneVariables();");
 			}
 			b.AppendLine("\treturn clone;");
 			b.Append("}");

ICSharpCode.Decompiler/IL/Instructions/VariableScope.cs

@@ -19,6 +19,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Linq;
 
 namespace ICSharpCode.Decompiler.IL
 {
@@ -42,6 +43,11 @@ namespace ICSharpCode.Decompiler.IL
 			}
 			base.CheckInvariant(phase);
 		}
+		
+		protected void CloneVariables()
+		{
+			throw new NotImplementedException();
+		}
 	}
 	
 	/// <summary>