Use unique_ptr to clarify ownership of QQuickDefaultClipNode objects

The clang static analyzer warns in 3df1fff15a10a64372ed4f92ba05271f about
a potential memory leak. While that particular claim is a false positive
(the loop is always entered if sortedIndex is not empty), the re-use of
the currentClipNode variable makes it hard to follow the object ownership,
and there might still be a potential memory leak.

Use std::unique_ptr to force explicit transfer of ownership, and get
implicit destruction of objects not owned at the end of the scope.

Change-Id: If826e1d81b92f1da60aae2262b628dcaaa2e592a
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
(cherry picked from commit 02c6e7bc3aca42a188b772aa9794b919e60017e7)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

0 files changed, 0 insertions, 0 deletions