...G...... [ZBX-8236] fixed few memory leaks in Windows agent
           [merge ^/branches/2.2 -c r48076]


git-svn-id: svn://svn.zabbix.com/trunk@48077 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
...G...... [ZBX-8455] improved synchronization between perfromance collector and agent threads


git-svn-id: svn://svn.zabbix.com/trunk@48080 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2