Minor optimization

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1483735 13f79535-47bb-0310-9956-ffa450edef68
HTTPCLIENT-1351: Preserve last request URI fragment in the execution context

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1483736 13f79535-47bb-0310-9956-ffa450edef68