Fix hanging on parsing Document Summaries
Fix hanging on parsing Document Summaries

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