* frame.c (Fdelete_frame): Clear the frame's display after calling

* frame.c (Fdelete_frame): Clear the frame's display after calling
	the window-system-dependent frame destruction routine.  We
	no longer need to pass the display as a separate argument to
	x_destroy_window.
	* xterm.c (x_destroy_window): Put the code which clears out f's
	display here, right after we free the storage it points to.  Put
	everything, including the code which clears x_focus_frame and
	x_highlight_frame, inside the BLOCK/UNBLOCK_INPUT pair.

	* frame.c (Fdelete_frame): Clear the frame's display after calling
	the window-system-dependent frame destruction routine.  We
	no longer need to pass the display as a separate argument to
	x_destroy_window.
	* xterm.c (x_destroy_window): Put the code which clears out f's
	display here, right after we free the storage it points to.  Put
	everything, including the code which clears x_focus_frame and
	x_highlight_frame, inside the BLOCK/UNBLOCK_INPUT pair.