Related: #119477#, nBuStart is initialized as -1, an unsigned int is required
Related: #119477#, nBuStart is initialized as -1, an unsigned int is required

Otherwise 65536 will be printed as the firt bullet

Change-Id: Ie200c1c67a9b73321990a55940115ae30b9e7c37

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