Avoid undef use of null ptr, use offsetof instead
Avoid undef use of null ptr, use offsetof instead

Change-Id: I095f45b537690fe98bf385d99194db6319d7ac93

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