TabView is crashing because unset owner (Fix inside)

Starting on 5.3, A big regression impacted me.

I have a TabView, and insert tabs dynamically. like:

var component = Qt.createComponent("SearchResultPage.qml");
var tab = tabsView.addTab(item.myTerm, component)

Which works nice on 5.2, however on 5.3 it disappears my tab and crash.

In 5.2, the insertTab had this workaround:

    function insertTab(index, title, component) {
        // 'loader' parent is a pending workaround while waiting for:
        // https://codereview.qt-project.org/#change,65788
        var tab = tabcomp.createObject(loader)

However on 5.3, it was removed.

Putting back the workaround, my applications works nice and stop crashing.
One thing to note is that https://codereview.qt-project.org/#change,65788 was abandoned.

Actually the TabView is completely unusable with constant crashes.