git: sockopt: Short circuit most of the code in soopt_from_kbuf(), if len == 0

[Sepherosa Ziehau]

commit 565d9f6fb9a897e246a45b5bbdfbc586c82a1c16
Author: Sepherosa Ziehau <sephe at dragonflybsd.org>
Date:   Sat Sep 5 11:27:25 2009 +0800

    sockopt: Short circuit most of the code in soopt_from_kbuf(), if len == 0
    
    Current kva_p() does not work w/ zero sized kmalloced memory.
    
    Dragonfly-bug: http://bugs.dragonflybsd.org/issue1481

Summary of changes:
 sys/kern/uipc_socket.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/565d9f6fb9a897e246a45b5bbdfbc586c82a1c16


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