fix doubly-defined aEmptyStr with Bison 2.3
fix doubly-defined aEmptyStr with Bison 2.3

Change-Id: Ia54673f3e689a49b3e9101ae4cf5b57f1e68f592

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