Merge lp:~sergei.glushchenko/percona-server/5.5-ps-bug1334570 into lp:percona-server/5.5

[Sergei Glushchenko]

Fixed by passing TRUE into list_free to also release list elements.

http://jenkins.percona.com/view/PS%205.5/job/percona-server-5.5-param/1041/

Tested manually with ./mtr scalability_metrics --valgrind

[Alexey Kopytov (akopytov)]

review: Approve

=== modified file 'plugin/scalability_metrics/scalability_metrics.c'
--- plugin/scalability_metrics/scalability_metrics.c	2014-02-10 13:46:53 +0000
+++ plugin/scalability_metrics/scalability_metrics.c	2014-09-01 04:32:43 +0000
@@ -173,7 +173,7 @@
     if (new_val == CTL_OFF)
     {
       mysql_mutex_lock(&thd_list_mutex);
-      list_free(thd_list_root, FALSE);
+      list_free(thd_list_root, TRUE);
       thd_list_root= NULL;
       mysql_mutex_unlock(&thd_list_mutex);
     }
@@ -196,7 +196,7 @@
 static
 int sm_plugin_deinit(void *arg __attribute__((unused)))
 {
-  list_free(thd_list_root, FALSE);
+  list_free(thd_list_root, TRUE);
   thd_list_root= NULL;
 
   mysql_mutex_destroy(&thd_list_mutex);