Fix a JS issue in Paste

Summary: Fixes T5227.

Author: epriestley

resources/celerity/map.php

@@ -460,7 +460,7 @@
     'rsrc/js/core/behavior-keyboard-shortcuts.js' => 'd75709e6',
     'rsrc/js/core/behavior-konami.js' => '5bc2cb21',
     'rsrc/js/core/behavior-lightbox-attachments.js' => '3aa45ad9',
-    'rsrc/js/core/behavior-line-linker.js' => '0969ff43',
+    'rsrc/js/core/behavior-line-linker.js' => 'f726d506',
     'rsrc/js/core/behavior-more.js' => '9b9197be',
     'rsrc/js/core/behavior-object-selector.js' => 'e6f67523',
     'rsrc/js/core/behavior-oncopy.js' => 'c3e218fe',
@@ -601,7 +601,7 @@
     'javelin-behavior-phabricator-hovercards' => '9c808199',
     'javelin-behavior-phabricator-keyboard-pager' => 'b657bdf8',
     'javelin-behavior-phabricator-keyboard-shortcuts' => 'd75709e6',
-    'javelin-behavior-phabricator-line-linker' => '0969ff43',
+    'javelin-behavior-phabricator-line-linker' => 'f726d506',
     'javelin-behavior-phabricator-nav' => 'b5842a5e',
     'javelin-behavior-phabricator-notification-example' => 'c51a6616',
     'javelin-behavior-phabricator-object-selector' => 'e6f67523',
@@ -864,13 +864,6 @@
     array(
       0 => 'javelin-install',
     ),
-    '0969ff43' =>
-    array(
-      0 => 'javelin-behavior',
-      1 => 'javelin-stratcom',
-      2 => 'javelin-dom',
-      3 => 'javelin-history',
-    ),
     '09b15cf1' =>
     array(
       0 => 'javelin-stratcom',
@@ -1994,6 +1987,13 @@
       2 => 'javelin-util',
       3 => 'javelin-reactor',
     ),
+    'f726d506' =>
+    array(
+      0 => 'javelin-behavior',
+      1 => 'javelin-stratcom',
+      2 => 'javelin-dom',
+      3 => 'javelin-history',
+    ),
     'f7379f45' =>
     array(
       0 => 'javelin-behavior',

webroot/rsrc/js/core/behavior-line-linker.js

@@ -10,7 +10,13 @@ JX.behavior('phabricator-line-linker', function() {
   var origin = null;
   var target = null;
   var root = null;
-  var editor_link = JX.$('editor_link');
+
+  var editor_link = null;
+  try {
+    editor_link = JX.$('editor_link');
+  } catch (ex) {
+    // Ignore.
+  }
 
   function getRowNumber(tr) {
     var th = JX.DOM.find(tr, 'th', 'phabricator-source-line');