Throw an error if jbig2dec fails to decode.
Throw an error if jbig2dec fails to decode.

darcs-hash:20090702232522-f546f-19176739ce21e525ce6f35d5278902ccc4383d7a.gz

nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf