python example: poll(-0.001) does not sleep forever

The conversion from seconds to milliseconds should only be done for
actual delays >= 0, not for the magic -1 value used for infinite
timeouts.
Signed-off-by: NPhilipp Hahn <hahn@univention.de>

examples/domain-events/events-python/event-test.py

@@ -172,10 +172,10 @@ class virEventLoopPure:
             if now >= next:
                 sleep = 0
             else:
-                sleep = next - now
+                sleep = (next - now) / 1000.0
 
         self.debug("Poll with a sleep of %d" % sleep)
-        events = self.poll.poll(sleep / 1000.0)
+        events = self.poll.poll(sleep)
 
         # Dispatch any file handle events that occurred
         for (fd, revents) in events: