Revision graph does not properly NUL-terminate path names.

Greetings.

The revision graph for my svn tree does not properly NUL-terminate paths.
As a result, I have revisions which include names of files, rather than
names of trees. At first I thought I'd done something wrong.
But then the file names started looking corrupted, as though existing
shorter pathnames were overwriting the longer ones.

I'm at a loss as to what I've done, but I think it's an internal bug
in which proper null termination is not happening (if it's written
in C or a related language, that is.)

If anyone wants to look at the tree, please contact me for a username
and password. First two to respond win the prize.

-- 
<center>--*greywolf;<br>
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