Warning fixes for VC5 (Igor Korot)

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

src/common/wincmn.cpp

@@ -1703,7 +1703,7 @@ bool wxWindowBase::Layout()
     // If there is a sizer, use it instead of the constraints
     if ( GetSizer() )
     {
-        int w, h;
+        int w = 0, h = 0;
         GetVirtualSize(&w, &h);
         GetSizer()->SetDimension( 0, 0, w, h );
     }