Fix/extension to previous commit

* lisp/gnus/gnus-start.el (gnus-read-newsrc-el-file): The same
  decoding needs to be done for group names in gnus-topic-alist.
  (gnus-gnus-to-quick-newsrc-format): Fix bogus temporary setting of
  variables; a simply let binding is sufficient.
1 job for scratch/gnus-decoded in 2 seconds (queued for 1 second)
Status Job ID Name Coverage
failed #2090


Name Stage Failure
test-all Test There has been a runner system failure, please try again
Running with gitlab-runner 11.6.0 (f100a208)
on gitlab-runner-docker cff9d373
Using Docker executor with image debian:stretch ...
Pulling docker image debian:stretch ...
Using docker image sha256:8d31923452f8b79ae91b01568d28c90e7d667a9eaff9734c6faeb017b0efa8d0 for debian:stretch ...
ERROR: Job failed (system failure): Error response from daemon: failed to start shim: exec: "docker-containerd-shim": executable file not found in $PATH: unknown (executor_docker.go:1018:0s)