Fix InvalidCastException in MemberLookup.RemoveInterfaceMembersHiddenByClassMembers

ICSharpCode.NRefactory.CSharp/Resolver/MemberLookup.cs

@@ -505,7 +505,7 @@ namespace ICSharpCode.NRefactory.CSharp.Resolver
 						}
 					}
 				} else if (!classLookupGroup.MethodsAreHidden) {
-					foreach (IMethod classMethod in classLookupGroup.Methods) {
+					foreach (var classMethod in classLookupGroup.Methods) {
 						// Hide all non-methods from interface types, and all methods with the same signature
 						// as a method in this class type.
 						foreach (var interfaceLookupGroup in lookupGroups) {