Avoid a segfault. (#309054)

Avoid a segfault. (#309054)

2005-06-27  Matthias Clasen  <mclasen@redhat.com>

	* modules/input/gtkimcontextxim.c (gtk_im_context_xim_finalize):
	Avoid a segfault. (#309054)

	* gdk/x11/gdkdisplay-x11.h (struct _GdkDisplayX11): Add
	fields for grab timestamps.

	* gdk/x11/gdkmain-x11.c (gdk_pointer_grab, gdk_keyboard_grab):
	Store grab timestamps when grabbing.

	* gdk/x11/gdkdisplay-x11.c (gdk_display_keyboard_ungrab)
	(gdk_display_pointer_ungrab): Don't unset the grab_window
	if the timestamps indicate that the ungrab will fails.