(js) Fix possible errors (help from jsjint)

UI/WebServerResources/js/Common/sgSearch.directive.js

@@ -1,6 +1,7 @@
 /* -*- Mode: javascript; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 
 (function() {
+  /* jshint validthis: true */
   'use strict';
 
   /*
@@ -66,7 +67,7 @@
         if (buttonEl && compiledButtonEl) {
           compiledButtonEl.on('click', controller.cancelSearch);
         }
-      }
+      };
     }
   }
 
@@ -83,7 +84,7 @@
         transclude(function(clone) {
           iElement.append(clone);
         });
-      }
+      };
     }
   }
 
@@ -109,9 +110,9 @@
 
     // Method to call on data changes
     vm.onChange = function() {
-      if (vm.searchText != null) {
+      if (vm.searchText !== null) {
         if (vm.searchText != vm.previous.searchText || vm.searchField != vm.previous.searchField) {
-          if (vm.searchText.length > 2 || vm.searchText.length == 0) {
+          if (vm.searchText.length > 2 || vm.searchText.length === 0) {
             // doSearch is the compiled expression of the sg-search attribute
             vm.doSearch($scope, { searchText: vm.searchText, searchField: vm.searchField });
           }