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jbig2dec: Handling missing OOB at end of height class.

--- a/jbig2_symbol_dict.c

+++ b/jbig2_symbol_dict.c

@@ -427,8 +427,8 @@

             /* check for broken symbol table */

             if (NSYMSDECODED >= params->SDNUMNEWSYMS) {

-                jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number, "no OOB signaling end of height class %d", HCHEIGHT);

-                goto cleanup;

+                jbig2_error(ctx, JBIG2_SEVERITY_WARNING, segment->number, "no OOB signaling end of height class %d, continuing", HCHEIGHT);

+                break;

             }

             SYMWIDTH = SYMWIDTH + DW;