Merge r25240 to 1.12 release branch

git-svn-id: http://framework.zend.com/svn/framework/standard/branches/release-1.12@25241 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Amf/Util/BinaryStream.php

@@ -126,12 +126,18 @@ class Zend_Amf_Util_BinaryStream
      * Reads a signed byte
      *
      * @return int Value is in the range of -128 to 127.
+     * @throws Zend_Amf_Exception
      */
     public function readByte()
     {
         if (($this->_needle + 1) > $this->_streamLength) {
             require_once 'Zend/Amf/Exception.php';
-            throw new Zend_Amf_Exception('Buffer underrun at needle position: ' . $this->_needle . ' while requesting length: ' . $length);
+            throw new Zend_Amf_Exception(
+                'Buffer underrun at needle position: '
+                . $this->_needle
+                . ' while requesting length: '
+                . $this->_streamLength
+            );
         }
 
         return ord($this->_stream{$this->_needle++});