gcc11.patch

   1 --- htmldoc-1.8.27/htmldoc/htmlsep.cxx~ 2006-05-31 17:27:28.000000000 +0200
   2 +++ htmldoc-1.8.27/htmldoc/htmlsep.cxx  2021-10-19 00:40:19.312028523 +0200
   3 @@ -536,7 +536,7 @@
   4      if (t->markup >= MARKUP_H1 && t->markup < (MARKUP_H1 + TocLevels) &&
   5          htmlGetVariable(t, (uchar *)"_HD_OMIT_TOC") == NULL)
   6      {
   7 -      if (heading >= 0)
   8 +      if (heading != 0)
   9          write_footer(out, *heading);
  10
  11        (*heading) ++;