* Mark THandleObject as abstract

git-svn-id: trunk@45875 -

packages/fcl-base/src/syncobjs.pp

@@ -52,7 +52,7 @@ type
       destructor Destroy;override;
    end;
 
-   THandleObject = class(TSynchroObject)
+   THandleObject = class abstract  (TSynchroObject)
    protected
       FHandle : TEventHandle;
       FLastError : Integer;