Using piped backchannel without consumers leads to nil

[slyoldfox]

Using the following from the example config:

streams:
    play_pcm48k: exec:ffplay -fflags nobuffer -f s16be -ar 48000 -i -#backchannel=1

And visiting https://localhost/stream.html?src=play_pcm48k will return in a nil pointer exception on c.cmd.Process.Kill

go2rtc/pkg/stdin/pipe.go

Line 25 in 9c98f5e

return errors.Join(p.Closer.Close(), p.cmd.Process.Kill(), p.cmd.Wait())

c.cmd.Process is nil in my case.

I am guessing this is caused by the producers being closed down before the command has spawn.
The producers are shut down because there are no consumers triggered by:

https://github.com/AlexxIT/go2rtc/blob/master/internal/streams/add_consumer.go#L86

[slyoldfox]

This is on 1.9.0 on macos (intel)

[AlexxIT]

https://github.com/AlexxIT/go2rtc/releases/tag/v1.9.1