K 10
svn:author
V 2
dd
K 8
svn:date
V 27
2001-05-27T00:57:25.000000Z
K 7
svn:log
V 400
In the VIRTUAL_TTY macro, add a check to make sure that the result of
SC_DEV isn't NULL; if it is, evaluate to NULL and don't dereference
NULL.  Callers of VIRTUAL_TTY must already check for the result being
NULL since si_tty can be NULL, so this should be safe.

This fixes a panic when trying to switch to a different vty in an
environment such as userconfig (-c option to the kernel).

PR:		26508

END