QByteArray benchmark: fix clang -Wmove-result

Take the argument by value instead of rvalue ref. In C++17, this is as
efficient, and enables the

   return big;

to use the QByteArray move constructor, avoiding the need for a manual
std::move(), which always looks suspicious on a return statement,
because more often than not, it's a pessimization that breaks NRVO.

This code doesn't seem to exist in Qt 6.2, so only

Pick-to: 6.3
Change-Id: I8bf678102f5df1870cfc61090d12f327478d74d1
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

0 files changed, 0 insertions, 0 deletions