buildworld broken with NO_MODULES= and MODULES_WITH_WORLD=

Hi!


Here it is:
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>>> stage 4.3: make dependencies
...
===> sys/modules/if_vlan (depend)
_at_ -> /usr/src/sys
machine -> /usr/src/sys/amd64/include
echo "#define INET 1" > opt_inet.h
rm -f .depend
mkdep -f .depend -a   -nostdinc -D_KERNEL -DKLD_MODULE -I- -I. -I_at_ -I_at_/contrib/altq /usr/src/sys/modules/if_vlan/../../net/if_vlan.c
/usr/src/sys/modules/if_vlan/../../net/if_vlan.c:45:22: opt_vlan.h: No such file or directory
mkdep: compile failed
*** Error code 1

Stop in /usr/src/sys/modules/if_vlan.
*** Error code 1

Stop in /usr/src/sys/modules.
*** Error code 1

Stop in /usr/src/sys.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
-----

Without these options a new buildworld process is at...
-----
>>> stage 4.4: building everything
-----
... and is going on.


WBR
-- 
Boris B. Samorodov, Research Engineer
InPharmTech Co,     http://www.ipt.ru
Telephone & Internet Service Provider