Fix the "x" link in tokenizer tokens incorrectly closing dialogs

Summary:
See <https://discourse.phabricator-community.org/t/removing-tags-or-subscribers-from-a-maniphest-modal-causes-the-modal-to-close/2874>.

My Javascript is rusty: `'' + null == 'null'`. Same for `undefined`. Use an explicit typecheck instead.

Test Plan: Clicked the "x" in a tokenizer token in a dialog, saw the token removed instead of the dialog closed.

Reviewers: amckinley

Reviewed By: amckinley

Differential Revision: https://secure.phabricator.com/D20623

resources/celerity/map.php

@@ -10,7 +10,7 @@ return array(
     'conpherence.pkg.css' => '3c8a0668',
     'conpherence.pkg.js' => '020aebcf',
     'core.pkg.css' => 'af983028',
-    'core.pkg.js' => '8225dc58',
+    'core.pkg.js' => '5a792749',
     'differential.pkg.css' => '8d8360fb',
     'differential.pkg.js' => '67e02996',
     'diffusion.pkg.css' => '42c75c37',
@@ -253,7 +253,7 @@ return array(
     'rsrc/externals/javelin/lib/URI.js' => '2e255291',
     'rsrc/externals/javelin/lib/Vector.js' => 'e9c80beb',
     'rsrc/externals/javelin/lib/WebSocket.js' => 'fdc13e4e',
-    'rsrc/externals/javelin/lib/Workflow.js' => '851f642d',
+    'rsrc/externals/javelin/lib/Workflow.js' => '445e21a8',
     'rsrc/externals/javelin/lib/__tests__/Cookie.js' => 'ca686f71',
     'rsrc/externals/javelin/lib/__tests__/DOM.js' => '4566e249',
     'rsrc/externals/javelin/lib/__tests__/JSON.js' => '710377ae',
@@ -752,7 +752,7 @@ return array(
     'javelin-workboard-header' => '111bfd2d',
     'javelin-workboard-header-template' => 'ebe83a6b',
     'javelin-workboard-order-template' => '03e8891f',
-    'javelin-workflow' => '851f642d',
+    'javelin-workflow' => '445e21a8',
     'maniphest-report-css' => '3d53188b',
     'maniphest-task-edit-css' => '272daa84',
     'maniphest-task-summary-css' => '61d1667e',
@@ -1294,6 +1294,17 @@ return array(
     '43bc9360' => array(
       'javelin-install',
     ),
+    '445e21a8' => array(
+      'javelin-stratcom',
+      'javelin-request',
+      'javelin-dom',
+      'javelin-vector',
+      'javelin-install',
+      'javelin-util',
+      'javelin-mask',
+      'javelin-uri',
+      'javelin-routable',
+    ),
     '46116c01' => array(
       'javelin-request',
       'javelin-behavior',
@@ -1607,17 +1618,6 @@ return array(
       'javelin-resource',
       'javelin-routable',
     ),
-    '851f642d' => array(
-      'javelin-stratcom',
-      'javelin-request',
-      'javelin-dom',
-      'javelin-vector',
-      'javelin-install',
-      'javelin-util',
-      'javelin-mask',
-      'javelin-uri',
-      'javelin-routable',
-    ),
     '87428eb2' => array(
       'javelin-behavior',
       'javelin-diffusion-locate-file-source',

webroot/rsrc/externals/javelin/lib/Workflow.js

@@ -104,7 +104,11 @@ JX.install('Workflow', {
       var link = event.getNode('tag:a');
 
       // If the link is an anchor, or does not go anywhere, ignore the event.
-      var href = '' + link.getAttribute('href');
+      var href = link.getAttribute('href');
+      if (typeof href !== 'string') {
+        return;
+      }
+
       if (!href.length || href[0] === '#') {
         return;
       }