um: Use tty_port in SIGWINCH handler
authorRichard Weinberger <richard@nod.at>
Mon, 11 Mar 2013 09:05:45 +0000 (10:05 +0100)
committerRichard Weinberger <richard@nod.at>
Mon, 11 Mar 2013 09:08:04 +0000 (10:08 +0100)
The tty below tty_port might get destroyed by the tty layer
while we hold a reference to it.
So we have to carry tty_port around...

Signed-off-by: Richard Weinberger <richard@nod.at>

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