[PATCH] KAction (Was: [Bug 50342] konsole crash when quitting)

[Waldo Bastian]

The following patch fixes the problem for me. It is not really clear to me why 
the sequence of events in the bugreport trigger this bug, Maybe there is 
something else wrong as well?

Short description:
m_parentCollection is a normal pointer to a KActionCollection and does not 
become null when the KActionCollect gets deleted. However, the QObject 
destructor, called as part of the KActionCollection destructor, deletes
all child objects (among them KAction objects) and resets parent() before
deleting them. So if parent() is null, the KAction object is being deleted 
as part of the m_parentCollection destructor and m_parentCollection shouldn't 
be any longer used.

Hmm.. what do we have here.... I guess this means there is something else 
wrong as well, because there is code in ~KActionCollection that resets 
pAction->m_parentCollection and that fails to work for some reason.

Cheers,
Waldo
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