testing: example test seems to have fd leak

[rsc]

I ran an example test under strace -f to figure out a mysterious case of issue #4550, and
I observed that the fds are going up by 1 in each successive example test. Looks like
the read side of the pipe is never closed. Should be very easy.

[davecheney]

Comment 1:

@rsc - do you think this is a new regression, possibly
https://code.google.com/p/go/source/detail?r=ee5afd4b14b72176c3e5bb83c804b2ed230e2c91,
or a pre existing issue ?

[davecheney]

Comment 2:

@rsc - do you think this is a new regression, possibly
https://code.google.com/p/go/source/detail?r=ee5afd4b14b72176c3e5bb83c804b2ed230e2c91,
or a pre existing issue ?

[rsc]

Comment 3:

This issue was closed by revision 4b7c2df.

Status changed to Fixed.