[PUSHED libreoffice-3-6] fdo#64150 don't segfault when there is no line

[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/3768

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


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To view, visit https://gerrit.libreoffice.org/3768
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Gerrit-MessageType: merged
Gerrit-Change-Id: Iab36de3d407925cdb0e092afae457907f0261b3e
Gerrit-PatchSet: 2
Gerrit-Project: core
Gerrit-Branch: libreoffice-3-6
Gerrit-Owner: Lionel Elie Mamane <lionel at mamane.lu>
Gerrit-Reviewer: Andras Timar <atimar at suse.com>
Gerrit-Reviewer: Chris Sherlock <chris.sherlock79 at gmail.com>