contrib: fix irc patchset hook when author is not registered

Avoid running into KeyError because the webhook payload does not have
a submitter canonicalName field.

  {
    "data": {
      "webhook": {
        "uuid": "69635b8e-8af5-4292-866b-1e45f75c132a",
        "event": "PATCHSET_RECEIVED",
        "date": "2023-07-11T13:55:17.248351983Z",
        "patchset": {
          "id": 42569,
          "subject": "Commands: add :echo command",
          "version": 1,
          "prefix": "aerc",
          "list": {
            "name": "aerc-devel",
            "owner": {
              "canonicalName": "~rjarry"
            }
          },
          "submitter": {}
        }
      }
    }
  }

Add username and email as fallback values.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Bence Ferdinandy <bence@ferdinandy.com>

0 files changed, 0 insertions, 0 deletions