Jakub Janků authored Aug 07, 2019 and Victor Toso committed Mar 03, 2020

Print client's id instead of its location im memory,
as the id can pinpoint the client both in spice-webdavd
and spice-gtk.

If an error occurs, print the corresponding function
where it happened and client's id (if applicable).

Signed-off-by: Jakub Janků <jjanku@redhat.com>