[PATCH] fix traceback in partitioning ui

[David Lehman]

Partition requests can be None when populating the tree. (#474284)

Port of commit 3568291 from rhel5-branch.

Patch attached.

[Jeremy Katz]

On Wed, 2008-12-03 at 10:04 -0600, David Lehman wrote:
> Partition requests can be None when populating the tree. (#474284)

What's up with the whitespace change at the beginning?  But looks good

Jeremy