[PUSHED] fdo#43460 sc: use isEmpty()

[Fridrich Strba (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/4316

Approvals:
  Fridrich Strba: Verified; Looks good to me, approved


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Gerrit-MessageType: merged
Gerrit-Change-Id: I062570091ebea0ad30f09b0358ab664a3ff949ef
Gerrit-PatchSet: 4
Gerrit-Project: core
Gerrit-Branch: master
Gerrit-Owner: Jelle van der Waa <jelle at vdwaa.nl>
Gerrit-Reviewer: Fridrich Strba <fridrich at documentfoundation.org>
Gerrit-Reviewer: LibreOffice gerrit bot <gerrit at libreoffice.org>
Gerrit-Reviewer: Tor Lillqvist <tml at iki.fi>