Description of problem:
--include-passwd option can't worked when using domdisplay

Version-Release number of selected component (if applicable):
libvirt-0.9.13-3.el6.x86_64

How reproducible:
always

Steps to Reproduce:
Steps to Reproduce:
1. prepare a guest with spice graphic
2. setup spice ssl env.
3. give a password to spice
#virsh dumpxml $guest --security-info
  ......
   <graphics type='spice' port='5900' tlsPort='5907' autoport='yes' listen='0.0.0.0' keymap='en-us' passwd='redhat' passwdValidTo='2022-02-27T19:46:10' connected='disconnect'>
      <listen type='address' address='0.0.0.0'/>
      <channel name='main' mode='secure'/>
      <channel name='inputs' mode='secure'/>
    </graphics>
  ......
4. use virt-viewer to connect guest
# remote-viewer spice://$IP?port=5900\&tls-port=5907 --spice-host-subject="C=IL,L=Raanana,O=Red Hat,CN=my server" --spice-ca-file='/etc/pki/libvirt-spice/ca-cert.pem'
worked well with input correct password
5. using domdisplay to show spice URI
# virsh domdisplay $guest --include-password


Actual results:
spice://localhost?port=5900&tls-port=5907
no password shown up in URI.

Expect result:

should providing the password for the SPICE channel.



additional :
i check the patch,
virAsprintf(&xpath, "string(/domain/devices/graphics"
                     "[ type='%s']/@passwd)", scheme[iter]);

maybe should be:
virAsprintf(&xpath, "string(/domain/devices/graphics[ type='%s']"
                     "/@passwd)", scheme[iter]);