Bug 913974 - Don't export moz_cairo_win32_printing_surface_create when printing disabled, to fix build error with ac_add_options --disable-printing. r=ted

layout/media/symbols.def.in

@@ -473,7 +473,9 @@ _moz_cairo_translate
 _moz_cairo_user_to_device
 _moz_cairo_user_to_device_distance
 _moz_cairo_win32_font_face_create_for_logfontw_hfont
+#ifdef NS_PRINTING
 _moz_cairo_win32_printing_surface_create
+#endif
 _moz_cairo_win32_scaled_font_select_font
 _moz_cairo_win32_surface_create
 _moz_cairo_win32_surface_create_with_d3dsurface9