These changes are commits d7e357946ead219b81cc1becbe0de8a99d96ca84 and
8ed0daa39bc662defa99507f926815431056543a in
https://github.com/samtools/htscodecs.  The stringtie package expects these
changes to have been applied.

diff -ru htslib-1.12/htscodecs/htscodecs/tokenise_name3.c stringtie-2.2.0/htslib/htscodecs/htscodecs/tokenise_name3.c
--- a/htscodecs/htscodecs/tokenise_name3.c	2021-02-22 13:07:06.000000000 +0100
+++ b/htscodecs/htscodecs/tokenise_name3.c	2021-12-04 19:27:39.000000000 +0100
@@ -211,7 +211,7 @@
 	if (!ctx) return NULL;
 	ctx->max_names = max_names;
 	pthread_setspecific(tok_key, ctx);
-    } else if (ctx->max_names < max_names) {
+    } else if (ctx->max_names < max_names+1) {
 	ctx = realloc(ctx, sizeof(*ctx) + ++max_names*sizeof(*ctx->lc));
 	if (!ctx) return NULL;
 	ctx->max_names = max_names;
@@ -1058,6 +1058,8 @@
 	tok = decode_token_type(ctx, ntok);
 	//fprintf(stderr, "Tok %d = %d\n", ntok, tok);
 
+	ctx->lc[cnum].last_ntok = 0;
+
 	switch (tok) {
 	case N_CHAR:
 	    if (len+1 >= name_len) return -1;ut/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=031f705a438e25af3b0fd1fe1b6453c4531608e0'>refs</a><a class='active' href='/guix/log/tests/guix-graph.sh'>log</a><a href='/guix/tree/tests/guix-graph.sh?id=031f705a438e25af3b0fd1fe1b6453c4531608e0'>tree</a><a href='/guix/commit/tests/guix-graph.sh?id=031f705a438e25af3b0fd1fe1b6453c4531608e0'>commit</a><a href='/guix/diff/tests/guix-graph.sh?id=031f705a438e25af3b0fd1fe1b6453c4531608e0'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/guix-graph.sh'>
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<div class='path'>path: <a href='/guix/log/?id=031f705a438e25af3b0fd1fe1b6453c4531608e0'>root</a>/<a href='/guix/log/tests?id=031f705a438e25af3b0fd1fe1b6453c4531608e0'>tests</a>/<a href='/guix/log/tests/guix-graph.sh?id=031f705a438e25af3b0fd1fe1b6453c4531608e0'>guix-graph.sh</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/guix-graph.sh?id=031f705a438e25af3b0fd1fe1b6453c4531608e0&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-09-28 21:06:36 -0500'>2020-09-28</span></td><td><a href='/guix/commit/tests/guix-graph.sh?id=d8934360d2453a403b5433e71d09188e4ed23b57'>tests: Simplify shell exit status negation;</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/guix-archive.sh, tests/guix-build-branch.sh, tests/guix-build.sh,
tests/guix-daemon.sh, tests/guix-download.sh, tests/guix-environment.sh,
tests/guix-gc.sh, tests/guix-git-authenticate.sh, tests/guix-graph.sh,
tests/guix-hash.sh, tests/guix-lint.sh, tests/guix-pack-relocatable.sh,
tests/guix-pack.sh, tests/guix-package-aliases.sh, tests/guix-package-net.sh,
tests/guix-package.sh: Use the shell '!' keyword to negate command exit status
in place of 'if ...; then false; else true; fi'
</span></span></td><td>Eric Bavier</td></tr>
<tr><td><span title='2020-05-11 23:30:55 +0200'>2020-05-11</span></td><td><a href='/guix/commit/tests/guix-graph.sh?id=88a96c568c47c97d05d883ada5afbc4e1200b10f'>guix graph: Add '--path'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/graph.scm (display-path): New procedure.
(%options, show-help): Add '--path'.
(guix-graph): Handle it.
* tests/guix-graph.sh: Add tests.
* doc/guix.texi (Invoking guix graph): Document it.
(Invoking guix size): Mention it.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-01-16 15:27:20 +0100'>2020-01-16</span></td><td><a href='/guix/commit/tests/guix-graph.sh?id=ee9a735bc8f544cf8eedc6c6a7e4ed2962663013'>graph: Add '--load-path' option.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/graph.scm (%option): Add '--load-path' option.
* doc/guix.texi: Document it.
* tests/guix-graph.sh: Test it.
</span></span></td><td>Pierre Neidhardt</td></tr>
<tr><td><span title='2019-11-07 18:39:55 +0100'>2019-11-07</span></td><td><a href='/guix/commit/tests/guix-graph.sh?id=3e962e59d849e4300e447d94487684102d9d412e'>graph: Support package transformation options.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/graph.scm (%options): Append %TRANSFORMATION-OPTIONS.
(show-help): Call 'show-transformation-options-help'.
(guix-graph): Call 'options-&gt;transformation' and use it.
* tests/guix-graph.sh: Add test.
* doc/guix.texi (Invoking guix graph): Document it.
</span></span></td><td>Ludovic Courtès</td></tr>