[bug #54364] [GNUMail] Crash due to quick IMAP folder switching

[Sergei Golovin]

Follow-up Comment #5, bug #54364 (project gnustep-nonfsf):

Having specific stores for CWStore objects here and there is a manifestation
of a design flaw in GNUMail.

It is natural for a mail application to maintain a list of accounts during
whole running session. So it is not a memory leak to allow CWStore objects
(virtually accounts) to be retained. The only thing to follow in this case is
having only one class instance maintaining/owning the list of CWStore objects.


I'm fine with TaskManager being the only owner of CWStore objects though
GNUMail.h/m is another possible choice (which i have made in my experiments).

I have tested the current GNUmail. The issue is gone. OK.


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