D13506: Fix cppcheck findings

[Jasem Mutlaq]

mutlaqja accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R321 KStars

REVISION DETAIL
  https://phabricator.kde.org/D13506

To: ckertesz, mutlaqja
Cc: kde-edu, narvaez, apol
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