Session read handler must return a string in PHP7

Aleksander Machniak

2015-09-19 7bbb86f78aad9c9ed71054e9e5f9ab01a9c04b17

 program/lib/Roundcube/rcube_session_db.php

@@ -108,6 +108,8 @@

            return !empty($this->vars) ? (string) $this->vars : '';
        }

        return '';
    }

    /**