https://bugzilla.gnome.org/show_bug.cgi?id=736736
/**
* gst_query_add_allocation_pool:
* @query: A valid #GstQuery of type GST_QUERY_ALLOCATION.
/**
* gst_query_add_allocation_pool:
* @query: A valid #GstQuery of type GST_QUERY_ALLOCATION.
- * @pool: the #GstBufferPool
+ * @pool: (transfer none) (allow-none): the #GstBufferPool
* @size: the size
* @min_buffers: the min buffers
* @max_buffers: the max buffers
* @size: the size
* @min_buffers: the min buffers
* @max_buffers: the max buffers