* modules/cluster/mod_heartmonitor.c

  (hm_update_stats): Flush heartbeat file before closing, to make sure the file
    is always written correctly, and check for errors on flush or close.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@759131 13f79535-47bb-0310-9956-ffa450edef68