Warning fixes for VC5 (Igor Korot)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37526 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/sashwin.cpp

@@ -95,7 +95,7 @@ void wxSashWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 
 void wxSashWindow::OnMouseEvent(wxMouseEvent& event)
 {
-    wxCoord x, y;
+    wxCoord x = 0, y = 0;
     event.GetPosition(&x, &y);
 
     wxSashEdgePosition sashHit = SashHitTest(x, y);