undo, will use a different overriding strategy

Author: gggeek

src/Traits/CharsetEncoderAware.php

@@ -7,12 +7,11 @@
 trait CharsetEncoderAware
 {
     protected static $charsetEncoder;
-    protected static $charsetEncoderClass = '\\PhpXmlRpc\\Helper\\Charset';
 
     public function getCharsetEncoder()
     {
         if (self::$charsetEncoder === null) {
-            self::$charsetEncoder = call_user_func(array(static::$charsetEncoderClass, 'instance'));
+            self::$charsetEncoder = Charset::instance();
         }
         return self::$charsetEncoder;
     }