call Refresh() to make animation work under Mac

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41841 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/animateg.cpp

@@ -531,6 +531,11 @@ void wxAnimationCtrl::OnTimer(wxTimerEvent &WXUNUSED(event))
     wxClientDC dc(this);
     DrawCurrentFrame(dc);
 
+#ifdef __WXMAC__
+    // without this, the animation currently doesn't redraw under Mac
+    Refresh();
+#endif // __WXMAC__
+
     // Set the timer for the next frame
     int delay = m_animation.GetDelay(m_currentFrame);
     if (delay == 0)