SDL: Fix exception on macOS 10.4/10.5 #3416
The Apple documentation indicates the function was introduced in 10.5 and not 10.6. But the change should indeed fix an issue on 10.4. I don't think it would be very complicated to make the code work on 10.4 as well (as opposed to doing nothing) but I am not sure it is worth the effort.
So I will merge this as is.