* window.c (delete_all_subwindows): Save the window's buffer in
its `height' field; we may need to know the window's old buffer once we have restored it from a window configuration. Fset_window_configuration): When we restore a window, if its `height' field is a buffer, restore its `buffer' field from that. This allows us to leave the window's buffer unchanged if the buffer recorded in the configuration is dead. * window.c (delete_all_subwindows): Removed unused variable named "count".
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