Never return the root node itself from rn_match(); return NULL instead.

This caused a panic in rtfreee() called with a root node from the
routing socket code (when processing a RTM_GET message looking for
the default route while there is none).

Since no existing code seems to have any use getting the root node
from rn_match(), it seems cleaner never to return it rather than
check for this condition at the caller's.

PR:		kern/12265

0 files changed, 0 insertions, 0 deletions