lib/log: correctly handle logging nil errors
Created by: bobheadxi
Oversight on my end, I think there's integration tests failing because of https://github.com/sourcegraph/sourcegraph/pull/35131
Test plan
n/a
Created by: bobheadxi
Oversight on my end, I think there's integration tests failing because of https://github.com/sourcegraph/sourcegraph/pull/35131
n/a