tests/qtest: Is vnc-display-test supposed to work on Darwin?

[Philippe Mathieu-Daudé]

Hi,

The vnc-display-test is failing on Darwin:
tests/qtest/vnc-display-test:45038): ERROR **: 10:42:35.488: vnc-error: 
Unsupported auth type 17973672

Is it supposed to pass, or should we skip it similarly to Windows?

Thanks,

Phil.