Protocols.Websocket.Request: call ::parse_request

Call ::parse_request() for WebSocket requests, too. parse_request parses
not_query and other information, which is useful to have in WebSocket
requests, aswell.

lib/modules/Protocols.pmod/WebSocket.pmod

@@ -442,10 +442,8 @@ class Request(function(array(string), Request:void) cb) {
     inherit Protocols.HTTP.Server.Request;
 
     protected void parse_request() {
-	if (!cb || !has_index(request_headers, "sec-websocket-key")) {
         ::parse_request();
-	    return;
-	} else {
+	if (cb && has_index(request_headers, "sec-websocket-key")) {
 	    string proto = request_headers["sec-websocket-protocol"];
 	    array(string) protocols =  proto ? proto / ", " : ({});
 #ifdef WEBSOCKET_DEBUG