Andreas Kling b29ff7b821 LibGUI: Don't use Core::Object::add() to instantiate dialogs ...

Now that add() returns a WidgetType&, we can't rely on the parent of a
GUI::Dialog to still keep it alive after exec() returns. This happens
because exec() will call remove_from_parent() on itself before
returning.

And so we go back to the old idiom for creating a GUI::Dialog centered
above a specific window. Just call GUI::Dialog::construct(), passing
the "parent" window as the last parameter.

2020-03-04 21:04:06 +01:00

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