Another fix for the core_output_filter() code that concatenates

small buckets: It's possible for the temporary brigade to
contain more than one bucket.  If this happens, we need to
recover the buckets after the first from the temporary brigade
before destroying it.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92176 13f79535-47bb-0310-9956-ffa450edef68