Fix list::remove when trying to remove first element of the list (SIGSEGV)

src/kernel/thread_manager.rs

@@ -141,6 +141,8 @@ impl ThreadManager {
         let old_status = machine.interrupt.set_status(InterruptStatus::InterruptOff);
         self.g_thread_to_be_destroyed = Option::Some(Rc::clone(&thread));
         self.g_alive.remove(Rc::clone(&thread));
+        #[cfg(debug_assertions)]
+        println!("Sleeping thread {}", thread.borrow().get_name());
         // g_objets_addrs->removeObject(self.thread) // a ajouté plus tard
         self.thread_sleep(machine, Rc::clone(&thread));
         machine.interrupt.set_status(old_status);