joyent/node — pull request #7662 by bnoordhuis (2014-05-22 11:03:56+00:00)
Title: child_process: don't throw on EMFILE/ENFILE

EMFILE and ENFILE mean 'out of file descriptors'. It's a run-time error
and as such should emit an error on the child process object, not throw
an exception.

Fixes #7453.