fdo#43965 dmapper: fix line width default
fdo#43965 dmapper: fix line width default

Writer's default is 0, but Word's default is 26 (15 in 1/8 pt)

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