git: Check a few pointers before dereferencing them. This is needed by the net80211 stack.

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxxxxx>]

commit 6cd0715fcaa9775171012ec796f4e4d484fa9e99
Author: Rui Paulo <rpaulo@FreeBSD.org>
Date:   Thu Feb 25 16:11:30 2010 +0000

    Check a few pointers before dereferencing them. This is needed by the
    net80211 stack.

Summary of changes:
 sys/net/if.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/6cd0715fcaa9775171012ec796f4e4d484fa9e99


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