Issue with changeset 9622, "Cocoa: don't fail outright if we see an unknown display format."

Hi Ryan,
This change seems to be causing 8-bit video modes to be used for fullscreen
on OS X 10.6.

I filed a bug with more details here:
https://bugzilla.libsdl.org/show_bug.cgi?id=3000
(just wanted to make sure it isn’t lost in the bug tracker!)

Thanks,
Eric