1st security warning: "installed zlib version may contain a security bug"

[Timothy Luoma]

I was trying to configure && make 'clamav-0.81' when it complained 
about this:

configure: error: The installed zlib version may contain a security 
bug. Please upgrade to 1.2.2 or later: http://www.zlib.net. You can 
omit this check with --disable-zlib-vcheck but DO NOT REPORT any 
stablility issues then!

I went to zlib.net, downloaded 1.2.2, did './configure && make install 
clean'

Is that all I need to do?  This is my first "security warning" so I 
want to make sure I'm not missing something obvious.

Is there a good "What newbies need to know about FreeBSD security" out 
there?

TjL