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Passing a `{ 0 }' as 4th argument to pdf_save_document() is no longer needed. Just pass NULL and get rid of opts. At least in recent mupdf (version 1.9a) `*in_opts' (the 4th argument of pdf_save_document()) is checked if NULL and in that case the default options are used. Signed-off-by: Sebastian Ramacher <sebastian@ramacher.at>
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