OpenDocument output: HTML comments are erroneously parsed

[nick-bart]

$ cat html-comment.md 
A sentence. And another one.
<!-- and a comment -->

$ pandoc html-comment.md -o html-comment.odt

results in an .odt document with the HTML comment;

for comparison,

$ pandoc html-comment.md -o html-comment.docx

results in a .docx document without the HTML comment.

Both documents viewed with both LibreOffice and TextEdit: same result.

Version:

$ pandoc -v
pandoc 1.12.1
Compiled with texmath 0.6.4, highlighting-kate 0.5.5.
Syntax highlighting is supported for the following languages:
actionscript, ada, apache, asn1, asp, awk, bash, bibtex, boo, c, changelog,
clojure, cmake, coffee, coldfusion, commonlisp, cpp, cs, css, curry, d,
diff, djangotemplate, doxygen, doxygenlua, dtd, eiffel, email, erlang,
fortran, fsharp, gnuassembler, go, haskell, haxe, html, ini, java, javadoc,
javascript, json, jsp, julia, latex, lex, literatecurry, literatehaskell,
lua, makefile, mandoc, matlab, maxima, metafont, mips, modula2, modula3,
monobasic, nasm, noweb, objectivec, objectivecpp, ocaml, octave, pascal,
perl, php, pike, postscript, prolog, python, r, relaxngcompact, rhtml, roff,
ruby, rust, scala, scheme, sci, sed, sgml, sql, sqlmysql, sqlpostgresql,
tcl, texinfo, verilog, vhdl, xml, xorg, xslt, xul, yacc, yaml
Default user data directory: /Users/nick/.pandoc
Copyright (C) 2006-2013 John MacFarlane
Web: http://johnmacfarlane.net/pandoc
This is free software; see the source for copying conditions. There is no
warranty, not even for merchantability or fitness for a particular purpose.