Allow more than one timer with the same ID. Closes #11699.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63422 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/private/timer.h

@@ -19,7 +19,8 @@
 class WXDLLIMPEXP_BASE wxMSWTimerImpl : public wxTimerImpl
 {
 public:
-    wxMSWTimerImpl(wxTimer *timer) : wxTimerImpl(timer) { m_id = 0; }
+    wxMSWTimerImpl(wxTimer *timer);
+    virtual ~wxMSWTimerImpl();
 
     virtual bool Start(int milliseconds = -1, bool oneShot = false);
     virtual void Stop();