Another imap crash. Fixes crash on saving messages with imap drafts folder. Credit goes to Don, who knew right away what was wrong after I told what's causing the crash. Thanks to him I can go to bed :) Fixed 3 imap related crashes in a night, I demand a cookie ;)

CCMAIL: 52796-done@bugs.kde.org

svn path=/trunk/kdepim/; revision=213290