Deleting first identity in KMail causes segfault if an assistive technology is listening

Preparation:
1. Configure KMail to have two identities with the second identity the default.
2. Quit KMail.
3. Do these things: http://userbase.kde.org/Accessibility/Getting_Started

Steps to reproduce:
1. Launch Orca
2. Launch KMail in accessible environment (see Getting Started)
3. Settings menu -> configure kmail
4. Select first identity
5. Alt V, Return to remove the identity

I pretty reliably get a segfault at this point (see attached backtrace)