Merge lp:~sergei.glushchenko/percona-server/ST-27220-bug1042946 into lp:percona-server/5.5

[Sergei Glushchenko]

This is a fix for memory leak issue in PS 5.5 and MySQL 5.5 related to deferred events management. Due to missing update of last_added pointer when deferred events container been cleaned subsequent event can be forgotten to delete.
See details at https://bugs.launchpad.net/percona-server/+bug/1042946/comments/32
Jenkins looks pretty good
http://jenkins.percona.com/view/PS%205.5/job/percona-server-5.5-param/608/

[lp:~sergei.glushchenko/percona-server/ST-27220-bug1042946]

387. By Sergei Glushchenko on 2013-01-03

Merge fix for bug 1042946 from 5.1 series

[Vlad Lesin (vlad-lesin)]

review: Approve (g2)

[Laurynas Biveinis (laurynas-biveinis)]

review: Approve

=== modified file 'Percona-Server/sql/rpl_utility.cc'
--- Percona-Server/sql/rpl_utility.cc	2012-04-21 10:24:39 +0000
+++ Percona-Server/sql/rpl_utility.cc	2013-01-03 08:44:24 +0000
@@ -1115,6 +1115,7 @@
     if (array.elements > array.max_element)
       freeze_size(&array);
     reset_dynamic(&array);
+    last_added= NULL;
   }
 }