Changelog for Cable Creation Shows Object as "#None"

[hSaria]

Environment

• Python version: 3.6.6
• NetBox version: 2.5.7

Steps to Reproduce

1. Create a Cable
2. Go to /extras/changelog/
3. The changelog entry there shows #None in the Object column

What did you expect to happen?

As with the short changelog on the main page, the extras/changelog/ page should show the correct object ID for the cable.

What happened instead?

On the extras/changelog/ page, it will show #None in the Object column, instead of #123 (123 being the ID of the cable). (the changelog on the main page shows the correct ID)

[DanSheps]

I haven't dove into this yet, but it appears to be related to using a null label on the cable