QListViewItem: add constexpr

This class is just a record with a bit of functionality on it.
To prevent pessimizing it compared to a C struct with the same
contents, mark all operations constexpr and remove the point-
less copy ctor (the generated one is just fine).

Converge on passing QRect, QSize, QPoint by value. Was mixed
cref and value passing before.

Saves ~1KiB each in text and data size on an UBSan build,
somewhat less, of course, on a normal one.

Change-Id: Ibae16792d822ff183a0c542380501978f2108d93
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

0 files changed, 0 insertions, 0 deletions