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jbig2dec: Treat unstriped pages with unknown height as striped with max stripe height.

--- a/jbig2_page.c

+++ b/jbig2_page.c

@@ -126,8 +126,9 @@

         }

     }

     if (page->height == 0xFFFFFFFF && page->striped == FALSE) {

-        jbig2_error(ctx, JBIG2_SEVERITY_WARNING, segment->number, "height is unspecified but page is not marked as striped");

+        jbig2_error(ctx, JBIG2_SEVERITY_WARNING, segment->number, "height is unspecified but page is not marked as striped, assuming striped with maximum strip size");

         page->striped = TRUE;

+        page->stripe_size = 0x7FFF;

     }

     page->end_row = 0;