Don't continue checking mail in the other folders when a local folder was removed, it causes a crash on startup.
Don't continue checking mail in the other folders when a local folder
was removed, it causes a crash on startup.

There is still a bug that local folders are removed erroneously because
their ImapPath somehow become empty, but at least they can be recovered
with Refresh Folder List now.

And as the crash is gone, I consider the bug fixed 
BUG:113329

svn path=/branches/KDE/3.5/kdepim/; revision=644877

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi