Next step for use-nullptr
Summary:
The patch continues use-nullptr migration with changes for some parts of code which was not fixed by clang-tidy.
Unfortunately it's not possible now to enable "-Wzero-as-null-pointer-constant" flag without adding many ugly fixes to code. It causes by warnings/errors produced by this flag for 3rd-party, non-KDevelop code such a KF5, Qt which still use old-style zeroes instead nullptr.
Reviewers: kfunk, KDevelop
Reviewed By: kfunk, KDevelop
Subscribers: kfunk, kdevelop-devel
Differential Revision: https://phabricator.kde.org/D3087