ajax.php: do not json_decode post data

ajax.php

@@ -17,9 +17,6 @@ function error($msg) {
 Header("Content-Type: application/json; charset=UTF-8");
 
 $postdata = file_get_contents("php://input");
-if ($postdata) {
-  $postdata = json_decode($postdata, true);
-}
 
 $fun = "ajax_{$_REQUEST['__func']}";
 $return = $fun($_REQUEST, $postdata);

src/options.php

@@ -1,5 +1,7 @@
 <?php
-function ajax_options_save($get_param, $post_param) {
+function ajax_options_save($get_param, $postdata) {
+  $post_param = json_decode($postdata, true);
+
   call_hooks('options_save', $post_param);
 
   $_SESSION['options'] = $post_param;