Fabien Thomas cb43ed2815 Only call flush in pipe mode.
It fixes a crash with a socket in top mode.

Ex:
# pmcstat -R 127.0.0.1:8080 -T -w1
then
# pmcstat -n1 -Sclock.prof -Slock.failed -O 127.0.0.1:8080

MFC after:	1 week
Sponsored by:	Stormshield
2018-01-17 16:55:35 +00:00
..
2018-01-17 16:55:35 +00:00