Previously, VNC displays were never torn down on QEMU exit, leaking
resources and leaving connected clients with unclean disconnects.
Add vnc_cleanup() to free all VNC displays during qemu_cleanup().
Make vnc_display_close() initiate disconnection of active clients,
and have vnc_display_free() drain the main loop until all clients
have completed their teardown, instead of asserting the client list
is empty.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
4a33bdd9e0