surface: Propagate the error status to _cairo_surface_get_device()

If the surface is in error, the appropriate action is report the error
using an inert error cairo_device_t.

Reported-by: Benjamin Otte <otte@redhat.com>

src/cairo-surface.c

@@ -231,6 +231,9 @@ _cairo_surface_allocate_unique_id (void)
 cairo_device_t *
 cairo_surface_get_device (cairo_surface_t *surface)
 {
+    if (unlikely (surface->status))
+	return _cairo_device_create_in_error (surface->status);
+
     return surface->device;
 }