[virt-manager PATCH] Fix checking for graphics spice for Xen

[Charles Arnold]

Advertising graphics support doesn't necessarily mean spice support.
self.devices.graphics.supported seems to not be spice specific
but rather more generic in indicating whether graphics are supported.
For Xen, spice is not supported so fallback to the old logic.

Signed-off-by: Charles Arnold <carnold at suse.com>

diff --git a/virtinst/domcapabilities.py b/virtinst/domcapabilities.py
index 67bceaa3..ad6e3363 100644
--- a/virtinst/domcapabilities.py
+++ b/virtinst/domcapabilities.py
@@ -382,7 +382,7 @@ class DomainCapabilities(XMLBuilder):
          return len(models) > 0 and bool("emulator" in backends)

      def supports_graphics_spice(self):
-        if not self.devices.graphics.supported:
+        if not self.devices.graphics.supported or self.conn.is_xen():
              # domcaps is too old, or the driver doesn't advertise 
graphics
              # support. Use our pre-existing logic
              if not self.conn.is_qemu() and not self.conn.is_test():