Fix crashes in calligraconverter tool
Trying a simple calligraconverter foo.odt foo.pdf
is making the program crash. The small commits here should fix some of the issues, making the converter work again on simple tested cases.
Trying a simple calligraconverter foo.odt foo.pdf
is making the program crash. The small commits here should fix some of the issues, making the converter work again on simple tested cases.