Added GUID to interface. Related to issue #1251

Author: joachimmarder

Source/VirtualTrees.AccessibilityFactory.pas

@@ -44,6 +44,7 @@ interface
 
 type
   IVTAccessibleProvider = interface
+    ['{8B76176B-C1F2-4C5C-99B4-2444FABE495C}']
     function CreateIAccessible(ATree: TBaseVirtualTree): IAccessible;
   end;