cppcheck: avoid leak in case of exception
cppcheck: avoid leak in case of exception

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