xwm: Remove child->parent pointer when parent destroys
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@ -313,6 +313,7 @@ static void xwayland_surface_destroy(
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wl_list_for_each_safe(child, next, &xsurface->children, parent_link) {
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wl_list_remove(&child->parent_link);
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wl_list_init(&child->parent_link);
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child->parent = NULL;
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}
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if (xsurface->surface_id) {
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