no topic-name in topic slug breaks links

[loopback0]

empty topic-name in topic slug breaks links with post IDs at the end · Issue #4446 · NodeBB/NodeBB

This works: https://what.thedailywtf.com/topic/19404/ This doesn't: https://what.thedailywtf.com/topic/19404//11

The ,$ topic has this as the link from the topic list.
https://what.thedailywtf.com/topic/19404//7

[ben_lubar]

save slug correctly on edit by BenLubar · Pull Request #4447 · NodeBB/NodeBB

#4446

[Buddy]

You accidentally posted this bug report into general.