add handling for corner case in xml_driver
add handling for corner case in xml_driver

nikken1/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor