Cleanup _get_rasds() in Virt_RASD.c
Cleanup _get_rasds() in Virt_RASD.c

I received a bug report about a memory leak in _get_rasds().  While
fixing the leak, I took the opportunity to do some other tidying in
this function.

     Signed-off-by: Jim Fehlig <jfehlig@novell.com>

libvirt/libvirt-cim,libvirt/libvirt-cim,libvirt/libvirt-cim