joyent/node — pull request #2649 by AndreasMadsen (2012-01-31 14:20:14+00:00)
Title: child_process: do not disconnect on exit emit

When using isolate the .fork would break because it had
no .disconnect method. This remove the exit handler there
would call .disconnect since it was not required.
It also change .disconnect to throw if the channel is closed,
this was not possible before because .disconnect would be called
twice.

This fix #2647