log.Ctx() should return global logger instead of disabledLogger

[irl-segfault]

log.Ctx(ctx) returns the associated logger if it's been registered in the ctx and returns disabledLogger otherwise. I think it should instead return the global logger.

It doesn't totally make intuitive sense to me that if a logger has not been registered in a context, that we by default assume logging should be disabled. My use case it to pass a sub-logger. If I miss a call to sublogger.WithContext() somewhere, I don't want logging to be erroneously disabled as a result.

[rs]

Good point. I would consider a PR.

[irl-segfault]

Sure, I'll put one up tomorrow. Thanks for considering this -- helps a lot with getting zerolog to work nicely with OpenTelemetry tracing.

[rs]

Already fixed by #343