ui: remove redundant indentation in vnc_client_update
    
    Now that previous dead / unreachable code has been removed, we can simplify
    the indentation in the vnc_client_update method.
    
    Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
    Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
    Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
    Message-id: 20171218191228.31018-4-berrange@redhat.com
    Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
    (cherry picked from commit b939eb89b6f320544a9328fa908d881d0024c1ee)
    Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>