Fixed scene actors without alias returning empty actor object instead of null.

src/scenes.js

@@ -210,7 +210,7 @@ export async function fetchScenesById(sceneIds, { reqUser, ...context } = {}) {
 				knex.raw('row_to_json(avatars) as avatar'),
 				knex.raw('row_to_json(sfw_media) as sfw_avatar'),
 				knex.raw('row_to_json(aliases) as alias'),
-				knex.raw('json_build_object(\'id\', aliases.id, \'name\', aliases.name, \'slug\', aliases.slug) as alias'),
+				knex.raw('case when aliases.id is not null then json_build_object(\'id\', aliases.id, \'name\', aliases.name, \'slug\', aliases.slug) end as alias'),
 				'countries.name as birth_country_name',
 				'countries.alias as birth_country_alias',
 				'releases_actors.release_id',