Fix budgeted_count subquery

[gileri]

Fix the following error :

oct. 20 23:52:11 ub4-nixos postgres[1856]: [1856] STATEMENT:  SELECT count(*) as count, 0 as cost, false as budget_exceeded from (SELECT * FROM "torrent_files" WHERE torrent_files.info_hash IN (DECODE('6c0ec56bb5496ba70ab0dd63dac6090408bf90c9', 'hex')))
oct. 20 23:52:11 ub4-nixos postgres[1856]: [1856] HINT:  For example, FROM (SELECT ...) [AS] foo.
oct. 20 23:52:11 ub4-nixos postgres[1856]: [1856] ERROR:  subquery in FROM must have an alias at character 68

[mgdigital]

Thanks @gileri !