What steps will reproduce the problem?
1. Create a new review request.
2. Upload a diff. (diffA)
3. Upload a new diff. (diffB)
4. Discard review request.
5. Create a new review request with same changeset.
6. Upload a diff. (diffC)
What is the expected output? What do you see instead?
I expect just one diff (diffC). But somehow, it keeps the history of all
the diffs. This changeset number is now lost forever. I have to create a
new changeset and do the whole process over again.
What operating system are you using? What browser?
Ubuntu/Firefox
Please provide any additional information below.
