git-codereview: fix bug in sync for multi-commit client

When deciding whether to discard the commit info for
the final commit, it was using the first commit instead of
the final one.

Change-Id: I2304fba6fa82a1d21600c3caa08b6b119edcdb7f
Reviewed-on: https://go-review.googlesource.com/3628
Reviewed-by: Rob Pike <r@golang.org>
4 files changed
tree: efac32502f9beaa55264563a1f2e0e0349afb8c5
  1. .gitattributes
  2. README
  3. git-codereview/