Fix broken call to get_no_access_error.
Review Request #10290 — Created Oct. 29, 2018 and submitted
The general comment API endpoint had a bad call to
get_no_access_error, passing in the user instead of the request. This
would cause a 500 instead of returning the proper API error.
- Ran unit tests.
- Grepped through the codebase to verify that all other call sites were