Add defensive check to safeguard from future #3342s
Add defensive check to safeguard from future #3342s

I hate adding "this should never happen" checks, but causing a tight
loop that OOMs Nomad is just too easy in this code otherwise.

hashicorp/nomad,burdandrei/nomad,nak3/nomad,hashicorp/nomad,dvusboy/nomad,hashicorp/nomad,dvusboy/nomad,dvusboy/nomad,burdandrei/nomad,dvusboy/nomad,dvusboy/nomad,dvusboy/nomad,nak3/nomad,nak3/nomad,nak3/nomad,burdandrei/nomad,nak3/nomad,burdandrei/nomad,burdandrei/nomad,hashicorp/nomad,nak3/nomad,hashicorp/nomad,hashicorp/nomad,burdandrei/nomad,nak3/nomad,dvusboy/nomad,burdandrei/nomad