Slightly improve database driver chack

Aleksander Machniak

2013-01-31 41db2bf47db6df8b6065986b7488f3fc538ebc14

Slightly improve database driver chack

 program/lib/Roundcube/rcube_db.php

@@ -70,7 +70,7 @@
        $driver = isset($driver_map[$driver]) ? $driver_map[$driver] : $driver;
        $class  = "rcube_db_$driver";

        if (!class_exists($class)) {
        if (!$driver || !class_exists($class)) {
            rcube::raise_error(array('code' => 600, 'type' => 'db',
                'line' => __LINE__, 'file' => __FILE__,
                'message' => "Configuration error. Unsupported database driver: $driver"),