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Karl Heuer authored
(init_sys_modes): Set old_tty_valid if we set old_tty. (reset_sys_modes): Restore tty settings only if old_tty_valid.
7e32a4fb
(init_sys_modes): Set old_tty_valid if we set old_tty. (reset_sys_modes): Restore tty settings only if old_tty_valid.