updated core to 7.53

modules/node/node.install

@@ -410,6 +410,7 @@ function node_schema() {
       'nid' => array(
         'description' => 'The {node}.nid that was read.',
         'type' => 'int',
+        'unsigned' => TRUE,
         'not null' => TRUE,
         'default' => 0,
       ),
@@ -933,6 +934,33 @@ function node_update_7014() {
   db_add_index('node', 'language', array('language'));
 }
 
+/**
+ * Enable node types that may have been erroneously disabled in Drupal 7.36.
+ */
+function node_update_7015() {
+  db_update('node_type')
+    ->fields(array('disabled' => 0))
+    ->condition('base', 'node_content')
+    ->execute();
+}
+
+/**
+ * Change {history}.nid to an unsigned int in order to match {node}.nid.
+ */
+function node_update_7016() {
+  db_drop_primary_key('history');
+  db_drop_index('history', 'nid');
+  db_change_field('history', 'nid', 'nid', array(
+    'description' => 'The {node}.nid that was read.',
+    'type' => 'int',
+    'unsigned' => TRUE,
+    'not null' => TRUE,
+    'default' => 0,
+  ));
+  db_add_primary_key('history', array('uid', 'nid'));
+  db_add_index('history', 'nid', array('nid'));
+}
+
 /**
  * @} End of "addtogroup updates-7.x-extra".
  */