security-problem i 1.2-pre3

[Reychman Felix <flix netch se>]

When killing Balsa, the temp files in /tmp called 
	mutt-morricone-xxx-yyy
are not removed. They have a permissions 600, but root will still be able
to read them.
As it is, the root where I use Balsa would have to read _big_ maillogs to
find my mail, if it wasn't for this, since my important mailboxes are
gpg-encrypted.

I believe these files should be removed when they are no longer needed, and
this has once been fixed, but is now apparently back.

Thankyou

-- 
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