This blocks 433 replies from the irc server if the keepnick module tries
to change our nick. This way the user isn't flooded with those errors.
Oh and the actual logic is a little more complicated than this...
This patch is inspired and implemented by SilverLeo. Thanks :)
git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1209 726aef4b-f618-498e-8847-2d620e286838