K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2020-09-23T18:03:07.371083Z
K 7
svn:log
V 399
Do not leak oldvmspace if image activation failed

and current address space is already destroyed, so kern_execve()
terminates the process.

While there, clean up some internals of post_execve() inlined in init_main.

Reported by:	Peter <pmc@citylink.dinoex.sub.org>
Reviewed by:	markj
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D26525

END