git-svn fails in prop_walk if $self->{path} is not empty

If url://repo/trunk is the current Git branch, prop_walk strips trunk from the path name. That is useful as, for example "git svn show-ignore" should not return results like trunk/foo but foo if svn:ignore for trunk includes foo. The problem now is that prop_walk strips trunk from the path and then calls itself recursively. But now trunk is missing in the path and get_dir fails, because it is called for a non existing path. The attached patch fixed the problem, by adding the previously stipped $self->{path} in the recursive call. I tested it with my current git-svn repository for the commands show-ignore and show-external. Patch was submitted through http://bugs.debian.org/477393 Signed-off-by: Gerrit Pape <pape@smarden.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>