Fix host and port via query string

We need to call initSetting() even if we don't have any interesting
default to set, as that is what checks if values have been provided as a
query string.

Fixes 96c76f7.

app/ui.js

@@ -159,6 +159,8 @@ const UI = {
         UI.updateLogging();
 
         /* Populate the controls if defaults are provided in the URL */
+        UI.initSetting('host', '');
+        UI.initSetting('port', 0);
         UI.initSetting('encrypt', (window.location.protocol === "https:"));
         UI.initSetting('view_clip', false);
         UI.initSetting('resize', 'off');