print issue in the decode module

[meyergin]

At the /core/decoder.rs, process_error_message uses print function which is frequently line-buffered by default, and the error info would be delayed to display at the io::stdout. And io::stdout.flush() or switch to println(), or just remove that as it can be catch at wrapper callback

[sparkstartconsulting]

Thanks. Looks like that was left in from debugging. I'll remove it next time I check in

[sparkstartconsulting]

fixed in d4e89c3