Dangling pointers and memory corruption after output recreate.

Submitted by Andriy Prystupa

Assigned to Wayland bug list

Link to original bug (#87824)

Description

Way to reproduce:

• weston backend closes current output and creates new one.
• old weston_output structure is released.
• compositor views have pointers to old weston_output.
• these pointers became dangling.

Fix: in weston_compositor_remove_output(...) add resetting reference to output: wl_list_for_each(view, &compositor->view_list, link) { if (view->output == remove_output) { view->output = NULL; view->surface->output = NULL; } }