resource: atomically return vout on failure (fixes #22284)

If vout_Request() fails, atomically mark the still stopped vout as free.
This removes a quick hack from 4586ffaf.

src/input/resource.c

@@ -356,8 +356,11 @@ vout_thread_t *input_resource_GetVout(input_resource_t *p_resource,
     }
 
     if (vout_Request(cfg, p_resource->p_input)) {
+        if (p_resource->p_vout_free == NULL && p_resource->i_vout == 0)
+            p_resource->p_vout_free = vout;
+        else
+            vout_Close(vout);
         vlc_mutex_unlock(&p_resource->lock);
-        input_resource_PutVout(p_resource, cfg->vout);
         return NULL;
     }