do not warn about "null pointer conversions" from integers in C++98 mode
do not warn about "null pointer conversions" from integers in C++98 mode

Change-Id: I15c7f52c542549ad131400c9b5395a06a4777687

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