fixes for building wxMSW with --disbale-all-features

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47608 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/private/timer.h

@@ -11,6 +11,8 @@
 #ifndef _WX_MSW_PRIVATE_TIMER_H_
 #define _WX_MSW_PRIVATE_TIMER_H_
 
+#if wxUSE_TIMER
+
 #include "wx/private/timer.h"
 
 class WXDLLIMPEXP_BASE wxMSWTimerImpl : public wxTimerImpl
@@ -27,4 +29,6 @@ protected:
     unsigned long m_id;
 };
 
+#endif // wxUSE_TIMER
+
 #endif // _WX_TIMERH_