got segfault on deleting null imap folder

[Anatoly Pugachev <mator@xxxxxx>]

Hello!
Using mutt-1.5.12 compiled myself on fedora core 5.
i've got mutt segfault when trying to delete imap folder.

here is the steps to reproduce:

in folder selection press '?' that will bring you all folders you have on
server, select any folder with cursor keys and don't 'space' it, press
'enter' to enter it. them, select '..' and try to delete it (with
confirmation). this gives me segfault. 

sorry for a bit dimmed problem description, but today is sysadmin day and i
congrats any IT people here, have a beer! cheers!

-- 
Anatoly Pugachev