examples/consolecallback: Add var to save callback
examples/consolecallback: Add var to save callback

> examples/consolecallback.py:98: error: "Console" has no attribute "stdin_watch"

Signed-off-by: Philipp Hahn <8cb7a2c205789112a9f61bc3102305826b6a8db1@univention.de>

libvirt/libvirt-python,libvirt/libvirt-python,libvirt/libvirt-python