[Bro] Sudden urge to do IRC analysis

[Randolph Reitz]

I want to add the IRC analysis to my list of BRO policies.  I'm  
running heavy-analysis which causes an error when I add irc...

[rreitz at rhyolite ~]$ bro  heavy-analysis irc
/usr/local/bro/policy/heavy.irc.bro, line 3 (IRC::irc_users): error,  
"redef" used but not previously defined
/usr/local/bro/policy/heavy.irc.bro, line 4 (IRC::irc_channels):  
error, "redef" used but not previously defined

I'm using ...

[rreitz at rhyolite ~]$ bro -v
bro version 1.3.2

I can't find the variables 'irc_users' or 'irc_channels' in any  
policy.  What am I missing?

Thanks,
Randy Reitz
Fermilab