better mutex guard this
better mutex guard this

Change-Id: Ic5cc38c76f6eae11460e0b6e3c55d0e2333a0b09

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