D21016: KCalCore : Clang-Tidy performance-unnecessary-copy-init fixes

[Allen Winter]

winterz created this revision.
winterz added reviewers: vkrause, dvratil.
Herald added a project: KDE PIM.
Herald added a subscriber: kde-pim.
winterz requested review of this revision.

REVISION SUMMARY
  fixed unnecessary copy initialization , found by clang-tidy

TEST PLAN
  make test still works

REPOSITORY
  R172 KCalendar Core

REVISION DETAIL
  https://phabricator.kde.org/D21016

AFFECTED FILES
  src/icalformat_p.cpp
  src/icaltimezones.cpp
  src/recurrence.cpp
  src/todo.cpp

To: winterz, vkrause, dvratil
Cc: kde-pim, dvasin, rodsevich, winterz, vkrause, mlaurent, knauss, dvratil
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