... avoiding one more memory allocation, and giving us access to
QCryptographicHashPrivate::result, for use in subsequent commits.
The only real adjustment to users of QMACPrivate::messageHash is that
instead of
messageHash.result();
they now need to use
messageHash.finalizeUnchecked();
messageHash.resultView() // .toByteArray()
I.e. explicitly finalize.
Pick-to: 6.5
Change-Id: I80b1158b062554bbf8afa7241674a892de27f204
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>