fix: do not edit task if it's the current

src/multitasking/scheduler.c

@@ -20,7 +20,7 @@ void scheduler(void)
 	cli();
 	struct task *it = current_task->next;
 	while (it && it->status != RUN) {
-		if (current_task->pid == 0 && func[it->status]) {
+		if (it != current_task && func[it->status]) {
 			struct task *new_it = it->prev;
 			func[it->status](it);
 			it = new_it;