Added check for empty rRangeList in ScViewFunc
Added check for empty rRangeList in ScViewFunc

This fixes a crash, which occured when the sum function was called, without
beeing able to generate an automatic range.

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