Reintroduce deinit and get rid of slock_unlock at bottom of threaded_worker function

libretro-common/queues/task_queue.c

@@ -456,8 +456,6 @@ static void threaded_worker(void *userdata)
       retro_sleep(10);
 #endif
    }
-
-   slock_unlock(running_lock);
 }
 
 static void retro_task_threaded_init(void)

runloop.c

@@ -1051,6 +1051,7 @@ bool runloop_ctl(enum runloop_ctl_state state, void *data)
 #ifdef HAVE_THREADS
             threaded_enable = settings->threaded_data_runloop_enable;
 #endif
+            task_queue_ctl(TASK_QUEUE_CTL_DEINIT, NULL);
             task_queue_ctl(TASK_QUEUE_CTL_INIT, &threaded_enable);
          }
          break;