ReducedMethod in CSharpInvocationResolveResult is now lazy.

ICSharpCode.NRefactory.CSharp/Resolver/CSharpInvocationResolveResult.cs

@@ -52,9 +52,15 @@ namespace ICSharpCode.NRefactory.CSharp.Resolver
 		/// <summary>
 		/// If IsExtensionMethodInvocation is true this property holds the reduced method.
 		/// </summary>
+		IMethod reducedMethod;
 		public IMethod ReducedMethod {
-			get;
+			get {
-			internal set;
+				if (!IsExtensionMethodInvocation)
+					return null;
+				if (reducedMethod == null && Member is IMethod)
+					reducedMethod = new ReducedExtensionMethod ((IMethod)Member);
+				return reducedMethod;
+			}
 		}
 		
 		public CSharpInvocationResolveResult(

ICSharpCode.NRefactory.CSharp/Resolver/OverloadResolution.cs

@@ -950,7 +950,7 @@ namespace ICSharpCode.NRefactory.CSharp.Resolver
 			if (member == null)
 				throw new InvalidOperationException();
 
-			var result = new CSharpInvocationResolveResult(
+			return new CSharpInvocationResolveResult(
 				this.IsExtensionMethodInvocation ? new TypeResolveResult(member.DeclaringType) : targetResolveResult,
 				member,
 				GetArgumentsWithConversions(targetResolveResult, member),
@@ -961,9 +961,6 @@ namespace ICSharpCode.NRefactory.CSharp.Resolver
 				argumentToParameterMap: this.GetArgumentToParameterMap(),
 				initializerStatements: initializerStatements,
 				returnTypeOverride: returnTypeOverride);
-			if (this.IsExtensionMethodInvocation && member is IMethod)
-				result.ReducedMethod = new ReducedExtensionMethod ((IMethod)member);
-			return result;
 		}
 		#endregion
 	}