D25787: Fix minor EBN and GCC issues

[Yuri Chornoivan]

yurchor created this revision.
yurchor added a reviewer: KDE Edu.
Herald added a project: KDE Edu.
Herald added a subscriber: kde-edu.
yurchor requested review of this revision.

REVISION SUMMARY
  Fix some minor issues from EBN
  
  http://ebn.kde.org/krazy/reports/kde-4.x/kdeedu/analitza/index.html
  
  and GCC logs
  
  https://build.kde.org/job/Applications/job/analitza/job/kf5-qt5%20SUSEQt5.12/13/warnings30Result/

TEST PLAN
  Compiles.

REPOSITORY
  R323 Analitza

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D25787

AFFECTED FILES
  analitza/additionchains.h
  analitza/analitzautils.cpp
  analitza/htmlexpressionwriter.cpp
  analitza/mathmlexpressionwriter.h
  analitza/operations.cpp
  analitzaplot/examples/audioplots.cpp
  analitzaplot/plotsmodel.cpp
  analitzaplot/private/functiongraphfactory.cpp
  analitzaplot/private/utils/marchingcubes.cpp
  declarative/qml/Graph2D.qml

To: yurchor, #kde_edu
Cc: kde-edu, narvaez, apol
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