fix minor memory access problem (only present in debugging code)
fix minor memory access problem (only present in debugging code)

cpjreynolds/libwpd,Distrotech/librevenge,Distrotech/libpwd,cpjreynolds/libwpd,Distrotech/librevenge,Distrotech/libpwd,Distrotech/libpwd,Distrotech/librevenge,Distrotech/libpwd,Distrotech/librevenge,cpjreynolds/libwpd,Distrotech/librevenge