Prevent churning log files when the destination volume is out of space.

Submitted by:	Victor J. Orlikowski <v.j.orlikowski@gte.net>
Reviewed by:	William Rowe


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@87017 13f79535-47bb-0310-9956-ffa450edef68