The XML stream writer previously added namespace declarations with the
same URL as existing ones, but new names, and renamed the XML elements
to use the new namespaces instead of the existing ones.
[ChangeLog] Fix renamed and duplicated namespaces in QXmlStreamWriter.
Pick-to: 6.5 6.6
Fixes: QTBUG-75456
Change-Id: I90706e067ac9991e9e6cd79ccb2373e4c6210b7b
Done-With: Philip Allgaier <philip.allgaier@bpcompass.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
13f673939d