dlike.install: Module uses durect DB table names in dbquery()

After enabling the dlike Module, anyone who has not the standard DB table layout (i.ex. because of using table-prefixes) will get an error:

WD php: PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'mydb.system' doesn't exist: SELECT weight FROM system WHERE name = :flag; Array                                                           [error]
(
    [:flag] => flag
)
 in dlike_enable() (line 15 of /srv/www/myhost/www/public_html/sites/all/modules/dlike/dlike.install).

/srv/www/myhost/www/public_html/includes/bootstrap.inc).
PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'mydb.system' doesn't exist: SELECT weight FROM system WHERE name = :flag; Array
(
    [:flag] => flag
)
 in dlike_enable() (line 15 of /srv/www/myhost/www/public_html/sites/all/modules/dlike/dlike.install).

This is because dlike is using the table name "system" in dbquery, without putting in brackets ({}).
Putting the table name in brackets, like: {system} fixed this issue.

Patch-Code:

15c15
<   $flag_weight = db_query('SELECT weight FROM system WHERE name = :flag', array(':flag' => 'flag'))->fetchField();
---
>   $flag_weight = db_query('SELECT weight FROM {system} WHERE name = :flag', array(':flag' => 'flag'))->fetchField();