HTTP_IN was attempting to process the PEEK mode. This threw off

check_pipeline_flush(), making it think another request was available (when
it wasn't). Apache would avoid flushing the prior request and block on
reading the next request. (of course, the client wasn't sending the next
one, cuz it was still waiting for the results of the first one)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91366 13f79535-47bb-0310-9956-ffa450edef68