* tty.h (tty_list::allocate_tty): Turn argument into a boolean. * tty.cc (tty_list::init): Protect entire allocation operation with tty_mutex (formerly title_mutex) to protect against allocation races.
* tty.h (tty_list::allocate_tty): Turn argument into a boolean. * tty.cc (tty_list::init): Protect entire allocation operation with tty_mutex (formerly title_mutex) to protect against allocation races.