Duplicate game entry produces more duplicate entries

[Clidus]

There is a flaw in this logic: https://github.com/Clidus/gwl/blob/master/ignition_application/models/game.php#L40

        // check if game is in database
        if($this->isGameInDB($GBID))
        {
            // get game from database
            if($this->getGameFromDatabase($GBID, $userID))
                // game found
                return true;
        }

isGameInDB returns true if more than zero records exist in the database. getGameFromDatabase fails if it doesn't find one record. A duplicate entry in the database will cause isGameInDB to be true, but getGameFromDatabase to fail, causing the code to fall through and add another entry to the database.

Fix this by erroring out if getGameFromDatabase fails.