Only print offset for byte-code functions

* lisp/emacs-lisp/backtrace.el (backtrace--print-flags): Check if the
function is compiled and only print the offset in that case.
2 jobs for feature/soc-bytecode-in-traceback in 11 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Test
failed #6634
test-all

00:00:11

failed #6635
test-filenotify-gio

00:00:01

 
Name Stage Failure
failed
test-all Test
error: cannot lock ref 'refs/remotes/origin/master': Unable to create '/builds/emacs/emacs/.git/refs/remotes/origin/master.lock': File exists.

Another git process seems to be running in this repository, e.g.
an editor opened by 'git commit'. Please make sure all processes
are terminated then try again. If it still fails, a git process
may have crashed in this repository earlier:
remove the file manually to continue.
fatal: failed to run reflog
ERROR: Job failed: exit code 1
failed
test-filenotify-gio Test There has been a runner system failure, please try again
Running with gitlab-runner 11.6.0 (f100a208)
on emba-docker-runner 2oEDrUT7
Using Docker executor with image debian:stretch ...
Pulling docker image debian:stretch ...
Using docker image sha256:5738956efb6b994ba2552e96100cc6a6d8a1f0c7dea402bddd54c5cf6f6871f8 for debian:stretch ...
ERROR: Job failed (system failure): Error response from daemon: Conflict. The container name "/runner-2oEDrUT7-project-1-concurrent-0-predefined-0" is already in use by container "ce4147445be1c35986cea6b500049a8b837cfdbedc8ede36b761a09cfbe066dc". You have to remove (or rename) that container to be able to reuse that name. (executor_docker.go:924:0s)