fix further crash in window-mirror finding -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2010-03-28 Ben Wing <ben@xemacs.org> * window.c (find_window_mirror_internal): Stop looking if no window mirror, and return 0. * window.c (window_display_lines): * window.c (window_display_buffer): * window.c (set_window_display_buffer): Don't need to update window mirror before calling find_window_mirror because does the updating automatically.