fix utest failed bug.

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
+<!-- Written by QtCreator 3.1.1, 2014-12-04T22:24:26. -->
 <qtcreator>
  <data>
   <variable>ProjectExplorer.Project.ActiveTarget</variable>

@@ -28,6 +28,7 @@ using namespace std;
 #include <srs_kernel_consts.hpp>
 #include <srs_kernel_error.hpp>
 #include <srs_app_source.hpp>
+#include <srs_core_performance.hpp>
 
 MockSrsConfigBuffer::MockSrsConfigBuffer(string buf)
 {
@@ -1092,7 +1093,7 @@ VOID TEST(ConfigTest, CheckMacros)
 #ifndef SRS_CONF_DEFAULT_TIME_JITTER
     EXPECT_TRUE(false);
 #endif
-#ifndef SRS_CONF_DEFAULT_QUEUE_LENGTH
+#ifndef SRS_PERF_PLAY_QUEUE
     EXPECT_TRUE(false);
 #endif
 #ifndef SRS_CONF_DEFAULT_PAUSED_LENGTH