Don't keep errChanIn hanging when closing
Don't keep errChanIn hanging when closing

Exiting an attached container waited for stdin and failed with:
"read dev/stdin: bad file descriptor".

tarsisazevedo/go-dockerclient,csrwng/go-dockerclient,achanda/go-dockerclient,liron-l/go-dockerclient,bboreham/go-dockerclient,paulbellamy/go-dockerclient,tarsisazevedo/go-dockerclient,davidstack/go-dockerclient,ybogdanov/go-dockerclient,davidstack/go-dockerclient,jefferai/go-dockerclient,ybogdanov/go-dockerclient,eliasgs/go-dockerclient,fsouza/go-dockerclient,csrwng/go-dockerclient