Description of problem:
From virt-manager, when force off vm during saving, Saving Virtual
Machine Process window will hang and could not quit.


Version-Release number of selected component:
virt-manager-0.10.0-18.el7.noarch

How reproducible:
100%

Steps to Reproduce:
1. Start virt-manager with --debug and prepare a running guest with GUI and big disk image which would take a long time to save.
2. "Save" this guest by selecting "Shut Down" -> "Save" and Click
"Yes" button for confirm window,  Quickly force off this guest during
saving process.
3. Error shutting down domain window will pop up, and click "Close" button




Actual result:
1. Saving Virtual Machine Process window will hang, and could not quit even
if quit virt-manager.

2.  Here is --debug output:
-----------------------------------------------
2014-03-19 16:21:52,388 (engine:869): Destroying vm 'rhel6u5-clone4'
2014-03-19 16:21:52,389 (asyncjob:190): Creating async job for
function cb=<function tmpcb at 0x2501578>
2014-03-19 16:21:52,491 (error:81): error dialog message:
summary=Error shutting down domain: Requested operation is not valid:
domain is not running
details=Error shutting down domain: Requested operation is not valid:
domain is not running

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 100, in
cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 122, in
tmpcb
    callback(*args, **kwargs)
  File "/usr/share/virt-manager/virtManager/domain.py", line 1201, in
destroy
    self._backend.destroy()
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 750, in
destroy
    if ret == -1: raise libvirtError ('virDomainDestroy() failed',
dom=self)
libvirtError: Requested operation is not valid: domain is not running
-----------------------------------------------


Expected results:
1. Saving Virtual Machine Process window should be quit, OR, Could not force
off vm during saving process.


Additional info:
1. This issue does not occur on RHEL6