Added clear_post_data.

src/bootstrap/safer_io.php

@@ -119,6 +119,10 @@ final class safer_io {
         }
     }
     
+    public static function clear_post_data() {
+        self::$string_of_POST_data = "";
+    }
+    
     public static function convert_to_utf8(string $in_str): string {
         if (! extension_loaded('mbstring')) {
             return $in_str;