Bug#841714: ebook-speaker: when I run ebook-speaker something.html I get prompt to isntall package xml2

[Łukasz Grabowski <graboluk@gmail.com>]

Package: ebook-speaker
Version: 2.8.1-1
Severity: important

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
running ebook-speaker something.html
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
prompt to install package xml2 although it is alaready installed
   * What outcome did you expect instead?
reading the file something.html

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 8.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 3.16.0-4-686-pae (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages ebook-speaker depends on:
ii  espeak        1.48.04+dfsg-1
ii  libc6         2.19-18+deb8u6
ii  libmagic1     1:5.22+15-2+deb8u2
ii  libncursesw5  5.9+20140913-1+b1
ii  libsox2       14.4.1-5
ii  libtinfo5     5.9+20140913-1+b1
ii  libxml2       2.9.1+dfsg1-5+deb8u3
ii  unar          1.8.1-3+b1

ebook-speaker recommends no packages.

Versions of packages ebook-speaker suggests:
pn  calibre             <none>
ii  ghostscript         9.06~dfsg-2+deb8u3
ii  libreoffice-writer  1:5.2.2~rc2-2~bpo8+1
ii  man2html-base       1.6g-7
ii  pandoc              1.12.4.2~dfsg-1+b13
ii  poppler-utils       0.26.5-2+deb8u1
ii  sane-utils          1.0.24-8+deb8u1
ii  tesseract-ocr       3.03.03-1
ii  xml2                0.4-3.1

-- no debconf information