[Dovecot] mail_plugins = mail_log (pop3) crashing 1.0.rc18 and rc19

[GK]

Hello

Thank for adding mail_log plugin in Dovecot POP3/IMAP server.
But when I am use "mail_log" in pop3 secction Dovecot getting
the following log message:

...
Jan 26 15:34:11 rtr dovecot: pop3-login: Login: user=<gk2>, 
method=PLAIN, rip=8x.xx.xx.xx, lip=8x.xx.xx.xxx
Jan 26 15:34:11 rtr dovecot: POP3(gk2): 
dlopen(/opt/dovecot/v1.0rc19/lib/dovecot/pop3/lib20_mail_log_plugin.so) 
failed: /op
t/dovecot/v1.0rc19/lib/dovecot/pop3/lib20_mail_log_plugin.so: undefined 
symbol: str_sanitize
Jan 26 15:34:11 rtr dovecot: child 29501 (pop3) returned error 89
Jan 26 15:34:19 rtr dovecot: pop3-login: Login: user=<kp>, method=PLAIN, 
rip=8x.xx.xx.xx, lip=8x.xx.xx.xx
Jan 26 15:34:19 rtr dovecot: POP3(kp): 
dlopen(/opt/dovecot/v1.0rc19/lib/dovecot/pop3/lib20_mail_log_plugin.so) 
failed: /opt
/dovecot/v1.0rc19/lib/dovecot/pop3/lib20_mail_log_plugin.so: undefined 
symbol: str_sanitize
Jan 26 15:34:19 rtr dovecot: child 29507 (pop3) returned error 89
...

Mail_log in IMAP section works fine.

OS: CentOS 4.4 / PLD 2