Gunnar Beutner 1c3346e3ce Kernel: Use KResultOr<size_t> throughout the TTY subsystem ...

Previously the VirtualConsole::on_tty_write() method would return an
incorrect value when an error had occurred. This prompted me to
update the TTY subsystem to use KResultOr<size_t> everywhere.

2021-06-16 21:29:36 +02:00

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