D24403: Small performance improvements suggested by clang-tidy

[Albert Astals Cid]

aacid closed this revision.

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D24403

To: aacid, cullmann, dhaumann
Cc: dhaumann, cullmann, kwrite-devel, kde-frameworks-devel, LeGast00n, GB_2, 
domson, michaelh, ngraham, bruns, demsking, sars