http: fix http server connection list when close

PR-URL: https://github.com/nodejs/node/pull/43949
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
Reviewed-By: Feng Yu <F3n67u@outlook.com>

lib/_http_common.js

@@ -182,6 +182,7 @@ function freeParser(parser, req, socket) {
     if (parser._consumed)
       parser.unconsume();
     cleanParser(parser);
+    parser.remove();
     if (parsers.free(parser) === false) {
       // Make sure the parser's stack has unwound before deleting the
       // corresponding C++ object through .close().