git: hammer expand: Fix "umount flushing...giving up!" problem.

[Matthew Dillon]

:commit 5ba58ea0cdaa8790454100de6bc7ac03941501d9
:Author: Michael Neumann <mneumann at ntecs.de>
:Date:   Tue Nov 24 20:42:36 2009 +0100
:
:    hammer expand: Fix "umount flushing...giving up!" problem.
:    
:    No need to modify header of the volume to be added. This fixes
:    the outstanding "umount flushing...giving up" problem.

    I had totally forgotten you had asked me to look at that.
    Sorry about that.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>