don't access contents of empty string, e.g. with kde96709-1.html
don't access contents of empty string, e.g. with kde96709-1.html

Change-Id: Ifa6db0dc7b5c67b65c5bc17c16fb3a61793c833a

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core