tdf#129809 qt5: take a reference in case m_aContents is replaced

This takes over Caolán's solution for gtk3 from
dbcdc5cd98df5756a96559e467cad95c629343ca
("tdf#129809 take a reference in case m_aContents is replaced")
for the qt5 case as well, to prevent that the XTransferable
is destroyed along with the Qt5MimeData object as new QMimeData
are set in the clipboard, as follows:

1   Qt5Clipboard::setContents                                               Qt5Clipboard.cxx
2   TransferableHelper::CopyToSelection                                     transfer.cxx
3   TransferableHelper::CopyToSelection                                     transfer.cxx
4   SwTransferable::CreateSelection                                         swdtflvr.cxx
5   SwWrtShell::SttSelect                                                   select.cxx
6   SwWrtShell::SelectTextAttr                                              move.cxx
7   SwTransferable::GetData                                                 swdtflvr.cxx
8   TransferableHelper::getTransferData2                                    transfer.cxx
9   TransferableHelper::getTransferData                                     transfer.cxx
10  Qt5MimeData::retrieveData                                               Qt5Transferable.cxx
11  QMimeDataPrivate::retrieveTypedData                                     qvariant.h
12  QMimeData::data                                                         qmimedata.cpp
13  QInternalMimeData::renderDataHelper(QString const&, QMimeData const *)
14  ??
15  ??
16  ??
17  QXcbConnection::handleXcbEvent(xcb_generic_event_t *)
18  QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>)
19  ??
20  g_main_context_dispatch

Change-Id: Ic712c901a31131efc596cac7f00f14bb6a7ce068
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/88192
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions