Alex Szpakowski
Since this commit https://hg.libsdl.org/SDL/rev/59b543340d63 , calling SDL_DestroyWindow will crash the program if the window has an active OpenGL context.
This is because the Cocoa_DestroyWindow code sets the window's driverdata to NULL and then calls [context setWindow:NULL], which tries to access the window's driverdata, resulting in a null pointer dereference.
I have attached a patch which fixes the issue by moving the line which sets the driverdata to NULL to after the lines which call functions that use the driverdata pointer.
Alex Szpakowski
Now that SDL for iOS requires at least iOS 5.1 at runtime, there are several old codepaths in the UIKit backend which can be removed. I've attached a patch which does so.
