When UUID definitions are placed within Qt namespace MinGW build fails because specializations of struct __mingw_uuidof_s are now defined in a different namespace.
Fixes: QTBUG-133516
Pick-to: 6.5
Change-Id: I49270aa2a892d407675dab7b90d3929d120c5224
Reviewed-by: Jøger Hansegård <joger.hansegard@qt.io>
(cherry picked from commit 84b7cef13913139b2ed7e506ace0fa6b97269829)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit 775d56f01d39c438c48397bdd571a607fb03abc3)