Mpipe fix

[Matthew Dillon]

:
:When an mpipe was being destroyed, each element in the array was being
:freed, but the array itself was not, so I added the free statement.
:
:-Craig
:------------------------------------------------------------------------
:Craig Dooley                                            craig at xxxxxxxxxx

    Ok.  I'm going to rewrite that whole mpipe_done() routine at the same
    time, it's a mess.  I'll have it committed in a few minutes.

						-Matt