Returns the latest SDL error

After calling this method, you should also call clear_error.

Property definitions

sdl2 $ SDL :: error
	# Returns the latest SDL error
	#
	# After calling this method, you should also call `clear_error`.
	fun error: CString `{ return (char*)SDL_GetError(); `}
lib/sdl2/sdl2_base.nit:42,2--45,55