fix visibility checking bug introduced in f9da13c

ICSharpCode.Decompiler/Ast/TypesHierarchyHelpers.cs

@@ -189,9 +189,13 @@ namespace ICSharpCode.Decompiler.Ast
 			if (attrs == MethodAttributes.Private)
 				return false;
 
+			if (baseMember.DeclaringType.Module == derivedType.Module)
+				return true;
+
 			if (attrs == MethodAttributes.Assembly || attrs == MethodAttributes.FamANDAssem) {
 				var derivedTypeAsm = derivedType.Module.Assembly;
 				var asm = baseMember.DeclaringType.Module.Assembly;
+
 				if (asm.HasCustomAttributes) {
 					var attributes = asm.CustomAttributes
 						.Where(attr => attr.AttributeType.FullName == "System.Runtime.CompilerServices.InternalsVisibleToAttribute");
@@ -202,11 +206,11 @@ namespace ICSharpCode.Decompiler.Ast
 							return true;
 					}
 				}
+
 				return false;
 			}
 
 			return true;
-
 		}
 
 		private static MethodAttributes GetAccessAttributes(IMemberDefinition member)