Follow up to r1457515

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1457528 13f79535-47bb-0310-9956-ffa450edef68
Fix parsing of HTTP headers. The parser was reading beyond the end of the HTTP response and swallowing and pipe-lined WebSocket messages.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1457529 13f79535-47bb-0310-9956-ffa450edef68