aVec may be empty, do not unconditionally access aVec[0]
aVec may be empty, do not unconditionally access aVec[0]

Change-Id: I6f35fee1e4883cfb15517f56387cd85e2e2f7370

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