Correct checks for wxUSE_PRINTING_ARCHITECTURE and wxUSE_ENH_METAFILE.

Compilation fixes for building without one or both of these symbols.

See #12664.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66172 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/printwin.h

@@ -56,7 +56,9 @@ public:
     virtual void DetermineScaling();
 
 protected:
+#if wxUSE_ENH_METAFILE
     virtual bool RenderPageIntoBitmap(wxBitmap& bmp, int pageNum);
+#endif
 
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxWindowsPrintPreview)
 };