criu/mount.c: fix printing errno
criu/mount.c: fix printing errno

An errno from setns might be lost after close()s, so change the order.

travis-ci: success for Assorted nitpicks
Signed-off-by: Kir Kolyshkin <c0159612b0ef32139322233232df1a0d189c4b9b@openvz.org>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@virtuozzo.com>

eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu