move std function

libs/http_server/pihttpserver.cpp

@@ -45,7 +45,7 @@ bool PIHTTPServer::registerPath(const PIString & path, PIHTTP::Method method, Re
 	Endpoint ep;
 	if (!ep.create(path)) return false;
 	ep.method   = method;
-	ep.function = functor;
+	ep.function = std::move(functor);
 	endpoints[ep.priority] << ep;
 	return true;
 }