Avoid infinite loops with XObjects.

Every xobject keeps a reference to the object from whence
it came. This is marked/unmarked as it is executed.

Thanks to Zeniko for spotting the potential problem.

1 files changed, 1 insertions, 0 deletions

diff --git a/pdf/mupdf.h b/pdf/mupdf.h
index 1ec9d4f2..fa7cd2f8 100644
--- a/pdf/mupdf.h
+++ b/pdf/mupdf.h
@@ -211,6 +211,7 @@ struct pdf_xobject_s
 	fz_colorspace *colorspace;
 	fz_obj *resources;
 	fz_buffer *contents;
+	fz_obj *me;
 };
 
 pdf_xobject *pdf_load_xobject(pdf_xref *xref, fz_obj *obj);