JERR_UNKNOWN_MARKER  760 jdmarker.c         ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo->unread_marker);
JERR_UNKNOWN_MARKER 1137 jdmarker.c           ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo->unread_marker);
JERR_UNKNOWN_MARKER 1384 jdmarker.c         ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, marker_code);
JERR_UNKNOWN_MARKER 1405 jdmarker.c         ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, marker_code);