CVS: cvs.openbsd.org: src

[Kenneth R Westerback <krw_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org>]

CVSROOT:	/cvs
Module name:	src
Changes by:	krw_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org	2008/05/06 01:18:09

Modified files:
	sys/net        : if_tun.c 

Log message:
M_PREPEND can set its first parameter to NULL, and all other code
using M_PREPEND checks for NULL after the invocation. So check
here too and return ENOBUFS if NULL is detected.

ok henning@