SVGWriter: fix build with C++98 compilers
SVGWriter: fix build with C++98 compilers

Change-Id: Idae0823767291081ed51a478583273daaa0cd1c3

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