Fix line drawing in the TUI header to use sane co-ordinates for lines.
Fix line drawing in the TUI header to use sane co-ordinates for lines.

jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree