[PUSHED] Fix typo: addtional => additional in the comment.

[Andras Timar (via Code Review)]

Hi,

Thank you for your patch!  It has been merged to LibreOffice.

If you are interested in details, please visit

    https://gerrit.libreoffice.org/3165

Approvals:
  Andras Timar: Verified; Looks good to me, approved
  Thomas Arnhold: Looks good to me, but someone else must approve


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To view, visit https://gerrit.libreoffice.org/3165
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Gerrit-MessageType: merged
Gerrit-Change-Id: I7e9e71c721266a0cbc4412024ec49cb689672876
Gerrit-PatchSet: 2
Gerrit-Project: core
Gerrit-Branch: master
Gerrit-Owner: Golnaz Irannejad <golnazirannejad at gmail.com>
Gerrit-Reviewer: Andras Timar <atimar at suse.com>
Gerrit-Reviewer: Thomas Arnhold <thomas at arnhold.org>