make wxFDIOHandler dtor virtual, it's meant to be used as a base class

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44856 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/include/wx/private/selectdispatcher.h b/include/wx/private/selectdispatcher.h
index 04072c1be1df26995b331566d5cec5de8599d826..2b43b03aa762da0200b5d9c38aae1654164d4c1d 100644 (file)
--- a/include/wx/private/selectdispatcher.h
+++ b/include/wx/private/selectdispatcher.h
@@ -30,6 +30,9 @@ public:
 
     // called when there is exception on descriptor
     virtual void OnExceptionWaiting(int fd) = 0;
+
+    // virtual dtor for the base class
+    virtual ~wxFDIOHandler() { }
 };
 
 // those flags describes sets where descriptor should be added