Make accidentally-public function names private

inspector.js' functions, beginning with addSubtreeToView(), are leaked
into the DOM due to a missing comma at the end of the previous func.
Bug #5289 <https://trac.transmissionbt.com/ticket/5289>

web/javascript/inspector.js

@@ -527,7 +527,7 @@ function Inspector(controller) {
         $(row).bind('wantedToggled',onFileWantedToggled);
         $(row).bind('priorityToggled',onFilePriorityToggled);
         $(row).bind('nameClicked',onNameClicked);
-    }
+    },
 
     addSubtreeToView = function (tor, parent, sub, i) {
         var key, div;