Update WordPress to 5.2

wp-includes/sodium_compat/autoload.php

@@ -0,0 +1,49 @@
+<?php
+
+if (!is_callable('sodiumCompatAutoloader')) {
+    /**
+     * Sodium_Compat autoloader.
+     *
+     * @param string $class Class name to be autoloaded.
+     *
+     * @return bool         Stop autoloading?
+     */
+    function sodiumCompatAutoloader($class)
+    {
+        $namespace = 'ParagonIE_Sodium_';
+        // Does the class use the namespace prefix?
+        $len = strlen($namespace);
+        if (strncmp($namespace, $class, $len) !== 0) {
+            // no, move to the next registered autoloader
+            return false;
+        }
+
+        // Get the relative class name
+        $relative_class = substr($class, $len);
+
+        // Replace the namespace prefix with the base directory, replace namespace
+        // separators with directory separators in the relative class name, append
+        // with .php
+        $file = dirname(__FILE__) . '/src/' . str_replace('_', '/', $relative_class) . '.php';
+        // if the file exists, require it
+        if (file_exists($file)) {
+            require_once $file;
+            return true;
+        }
+        return false;
+    }
+
+    // Now that we have an autoloader, let's register it!
+    spl_autoload_register('sodiumCompatAutoloader');
+}
+
+require_once dirname(__FILE__) . '/src/SodiumException.php';
+if (PHP_VERSION_ID >= 50300) {
+    // Namespaces didn't exist before 5.3.0, so don't even try to use this
+    // unless PHP >= 5.3.0
+    require_once dirname(__FILE__) . '/lib/namespaced.php';
+    require_once dirname(__FILE__) . '/lib/sodium_compat.php';
+}
+if (PHP_VERSION_ID < 70200 || !extension_loaded('sodium')) {
+    require_once dirname(__FILE__) . '/lib/php72compat.php';
+}