Bug 694303: Fix various problems in pdf parsing

Spot a 'startxref' of 0 as being an error; otherwise the code
falls through and we SEGV.

Also update the pdf_repair_obj function to cope better with the new
way we parse ints. Previously we parsed ints into the buffer and
atoi'd them there - to step backwards over the int was therefore a
matter of stepping backwards over the specified number of chars.

In the 'new' code (now quite old) we parse ints directly, hence we
cannot do this stepping back. Also, stepping backwards by more than
1 byte is risky anyway. We therefore adopt a smarter approach of
returning the next lexed token from pdf_repair_obj.

Thanks to zeniko for reporting these problems and providing a test
file.

0 files changed, 0 insertions, 0 deletions