fix generic_includes.php returning error Undefined variable in /var/w…

…ww/loris/tools/generic_includes.php on line 28

tools/generic_includes.php

@@ -24,6 +24,7 @@
 $client->makeCommandLine();
 $client->initialize($configFile);
 $config        = NDB_Config::singleton();
+$DB            = NDB_Factory::singleton()->database();
 $lorisInstance = new \LORIS\LorisInstance(
     $DB,
     $config,
@@ -32,4 +33,3 @@
         __DIR__ . "/../modules/",
     ],
 );
-$DB            = $lorisInstance->getDatabaseConnection();