updated core to 7.56, secutity update

includes/database/sqlite/query.inc

@@ -99,16 +99,15 @@ class UpdateQuery_sqlite extends UpdateQuery {
 
 /**
  * SQLite specific implementation of DeleteQuery.
- *
- * When the WHERE is omitted from a DELETE statement and the table being deleted
- * has no triggers, SQLite uses an optimization to erase the entire table content
- * without having to visit each row of the table individually.
- *
- * Prior to SQLite 3.6.5, SQLite does not return the actual number of rows deleted
- * by that optimized "truncate" optimization.
  */
 class DeleteQuery_sqlite extends DeleteQuery {
   public function execute() {
+    // When the WHERE is omitted from a DELETE statement and the table being
+    // deleted has no triggers, SQLite uses an optimization to erase the entire
+    // table content without having to visit each row of the table individually.
+    // Prior to SQLite 3.6.5, SQLite does not return the actual number of rows
+    // deleted by that optimized "truncate" optimization. But we want to return
+    // the number of rows affected, so we calculate it directly.
     if (!count($this->condition)) {
       $total_rows = $this->connection->query('SELECT COUNT(*) FROM {' . $this->connection->escapeTable($this->table) . '}')->fetchField();
       parent::execute();

includes/database/sqlite/schema.inc

@@ -244,7 +244,7 @@ class DatabaseSchema_sqlite extends DatabaseSchema {
     // database. So the syntax '...RENAME TO database.table' would fail.
     // So we must determine the full table name here rather than surrounding
     // the table with curly braces incase the db_prefix contains a reference
-    // to a database outside of our existsing database.
+    // to a database outside of our existing database.
     $info = $this->getPrefixInfo($new_name);
     $this->connection->query('ALTER TABLE {' . $table . '} RENAME TO ' . $info['table']);