example: Fix argument handling

sys.argv contains the original command line arguments, while args only
contains the arguments not handled by getopt(). Currently this is no
problem since --help is the only command line option passable, which
terminates the process, so the code is never reached. Any option added
in the future will reveal the bug.
Signed-off-by: NPhilipp Hahn <hahn@univention.de>

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

@@ -486,8 +486,8 @@ def main():
             usage()
             sys.exit()
 
-    if len(sys.argv) > 1:
-        uri = sys.argv[1]
+    if len(args) >= 1:
+        uri = args[0]
     else:
         uri = "qemu:///system"