mod_cache_disk: Remove the unnecessary intermediate brigade while writing

to disk. Fixes a problem where mod_disk_cache was leaving buckets in the
intermediate brigade and not passing them to out on exit.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1204101 13f79535-47bb-0310-9956-ffa450edef68