Before applying this patch, I was getting diffs (with post-review -n) with doubled-up newlines, like:
--- file1
     (revision 1234)
+++ file1
     (working copy)
(where the leading spaces above are actually tabs)

The RB server rejected these patches on submission.
The problem is that the function parsing the output of 'svn info' was not stripping the trailing newlines.

My internal RB deployment, Ubuntu 8.04 32-bit (client and server); post-review r1477; Subversion command-line client, version 1.5.1. (locally back-ported from Ubuntu Intrepid source package subversion-1.5.1dfsg1).