Resolves: fdo#47209 and rhbz#927223 syntax highlighter crash
Resolves: fdo#47209 and rhbz#927223 syntax highlighter crash

when trying to parse empty lines looking for the matching
bracket

Change-Id: I3961a3d0e804d136de286e21934c6ba5ab0496cf

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