diff --git a/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLink.php b/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLink.php
index 3c6e216..62f5ffe 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLink.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLink.php
@@ -114,7 +114,7 @@ public function preRender(&$values) {
       $nids[] = $this->getValue($row, 'nid');
     }
 
-    if (!emtpty($nids)) {
+    if (!empty($nids)) {
       $this->countRevisions = $this->database->query("SELECT nid, COUNT(vid) as count FROM {node_field_revision} WHERE nid IN (:nids) GROUP BY nid", array(':nids' => array_unique($nids)))->fetchAllKeyed();
     }
   }
diff --git a/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLinkDelete.php b/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLinkDelete.php
index 281b619..eace77d 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLinkDelete.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLinkDelete.php
@@ -27,7 +27,7 @@ protected function renderLink($data, ResultRow $values) {
     list($node, $revision_node, $vid) = $this->getRevisionEntity($values, 'update');
 
     $type = $node->getType();
-    if (!($this->currentUser->hasPermission("delete $type revisions") || $this->currentUser->hasPermission('delete all revisions') || $this->currentUser->hasPermission('administer nodes')) && node_access('delete', $revision_node)) {
+    if (!(($this->currentUser->hasPermission("delete $type revisions") || $this->currentUser->hasPermission('delete all revisions') || $this->currentUser->hasPermission('administer nodes')) && node_access('delete', $revision_node))) {
       return;
     }
 
diff --git a/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLinkRevert.php b/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLinkRevert.php
index 34149be..476efe2 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLinkRevert.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLinkRevert.php
@@ -24,7 +24,7 @@ class RevisionLinkRevert extends RevisionLink {
    * {@inheritdoc}
    */
   protected function renderLink($data, ResultRow $values) {
-    list($node, $revision_node, $vid) = $this->getRevisionEntity($values, 'update');
+    list($node, , $vid) = $this->getRevisionEntity($values, 'update');
 
     $type = $node->bundle();
     if (!($access = ($this->currentUser->hasPermission("revert $type revisions") || $this->currentUser->hasPermission('revert all revisions') || $this->currentUser->hasPermission('administer nodes')) && node_access('update', $node))) {