cpu: Cleanup ppcCompute to avoid memory leak
cpu: Cleanup ppcCompute to avoid memory leak

This patch is to Cleanup ppcCompute to avoid memory leak to make
the code better.

Signed-off-by: Li Zhang <63d1e54bd8032f9fe1aee582998ae5c623006e3c@linux.vnet.ibm.com>

zhlcindy/libvirt-1.1.4-maintain,cbosdo/libvirt,rlaager/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,cbosdo/libvirt,crobinso/libvirt,taget/libvirt,nertpinx/libvirt,shugaoye/libvirt,shugaoye/libvirt,datto/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,taget/libvirt,jfehlig/libvirt,elmarco/libvirt,zhlcindy/libvirt-1.1.4-maintain,rlaager/libvirt,VenkatDatta/libvirt,elmarco/libvirt,VenkatDatta/libvirt,olafhering/libvirt,datto/libvirt,andreabolognani/libvirt,rlaager/libvirt,zhlcindy/libvirt-1.1.4-maintain,andreabolognani/libvirt,jardasgit/libvirt,agx/libvirt,datto/libvirt,agx/libvirt,cbosdo/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,taget/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,datto/libvirt,elmarco/libvirt,libvirt/libvirt,datto/libvirt,zhlcindy/libvirt-1.1.4-maintain,andreabolognani/libvirt,zhlcindy/libvirt-1.1.4-maintain,eskultety/libvirt,crobinso/libvirt,crobinso/libvirt,eskultety/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,rlaager/libvirt,zippy2/libvirt,elmarco/libvirt,olafhering/libvirt,taget/libvirt,shugaoye/libvirt,olafhering/libvirt,jfehlig/libvirt,taget/libvirt,zippy2/libvirt,zippy2/libvirt,jardasgit/libvirt,eskultety/libvirt,crobinso/libvirt,cbosdo/libvirt,libvirt/libvirt,olafhering/libvirt,andreabolognani/libvirt,zippy2/libvirt,agx/libvirt,VenkatDatta/libvirt,eskultety/libvirt,jardasgit/libvirt,agx/libvirt,elmarco/libvirt,cbosdo/libvirt,jardasgit/libvirt,andreabolognani/libvirt,jfehlig/libvirt,eskultety/libvirt,libvirt/libvirt,agx/libvirt,rlaager/libvirt,libvirt/libvirt,jardasgit/libvirt