imap/2112: tab completion of imap:// addresses segmentation fault

[New Mutt PR <cb@xxxxxxxx>]

>Number:         2112
>Notify-List:    
>Category:       imap
>Synopsis:       tab completion of imap:// addresses segmentation fault
>Confidential:   no
>Severity:       normal
>Priority:       medium
>Responsible:    mutt-dev
>State:          open
>Keywords:       
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 14 11:25:51 +0200 2005
>Originator:     Bruno Postle
>Release:        CVS
>Organization:
>Environment:
linux, cygwin
>Description:
Mutt allows attempts to tab-complete the domain-name part of an imap address 
and segfaults.
>How-To-Repeat:
Start mutt without any configuration:  mutt -F /dev/null

Use (c)hange-folder and enter a bogus IMAP address:

  Open mailbox: imap://dsfs

Then hit the tab key:

  Open mailbox: imap://dsfsSegmentation fault
>Fix:
Unknown
>Add-To-Audit-Trail:

>Unformatted: