Fix toggling advanced option in WebUI

option "Disallow connection to peers on privileged ports"

src/webui/www/private/views/preferences.html

@@ -1898,7 +1898,7 @@
                         $('utpTCPMixedModeAlgorithm').setProperty('value', pref.utp_tcp_mixed_mode);
                         $('allowMultipleConnectionsFromTheSameIPAddress').setProperty('checked', pref.enable_multi_connections_from_same_ip);
                         $('validateHTTPSTrackerCertificate').setProperty('checked', pref.validate_https_tracker_certificate);
-                        $('blockPeersOnPrivilegedPorts').setProperty('checked', pref.no_connect_privileged_ports);
+                        $('blockPeersOnPrivilegedPorts').setProperty('checked', pref.block_peers_on_privileged_ports);
                         $('enableEmbeddedTracker').setProperty('checked', pref.enable_embedded_tracker);
                         $('embeddedTrackerPort').setProperty('value', pref.embedded_tracker_port);
                         $('uploadSlotsBehavior').setProperty('value', pref.upload_slots_behavior);